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36 results about "Atriocaval shunt" patented technology

An atriocaval shunt (ACS) is an intraoperative surgical shunt between the atrium of the heart and the inferior vena cava. It is used during the repair of larger juxtahepatic (next to the liver) vascular injuries such as an injury to the local vena cava. Injuries to the inferior vena cava are challenging, those behind the liver being the most difficult to repair.

Temporary Interatrial Shunts

Described embodiments include apparatus (28) that includes a shunt (26). The shunt includes a flared distal portion (40), a flared proximal portion (44), and an intermediate portion (42), disposed between the distal portion and the proximal portion. The apparatus further includes a constricting flexible longitudinal element (38) passing circumferentially along the intermediate portion of the shunt, configured to constrict the intermediate portion of the shunt, and one or more proximal-portion-collapsing flexible longitudinal elements (36) configured to collapse the proximal portion of the shunt. Other embodiments are also described.
Owner:WAVE LTD V +1

Devices with dimensions that can be reduced and increased in vivo, and methods of making and using the same

Devices are provided with an internal dimension that can be reduced and increased in vivo. In one example, an interatrial shunt for placement at an atrial septum of a patient's heart includes a body. The body includes first and second regions coupled in fluid communication by a neck region. The body includes a shape-memory material. The body defines a passageway through the neck region for blood to flow between a first atrium and a second atrium. The first and second regions are superelastic at body temperature, and the neck region is malleable at body temperature. A flow area of the passageway through the neck region may be adjusted in vivo.
Owner:WAVE LTD V

Temporary interatrial shunts

Described embodiments include apparatus (28) that includes a shunt (26). The shunt includes a flared distal portion (40), a flared proximal portion (44), and an intermediate portion (42), disposed between the distal portion and the proximal portion. The apparatus further includes a constricting flexible longitudinal element (38) passing circumferentially along the intermediate portion of the shunt, configured to constrict the intermediate portion of the shunt, and one or more proximal-portion-collapsing flexible longitudinal elements (36) configured to collapse the proximal portion of the shunt. Other embodiments are also described.
Owner:WAVE LTD V +1

Delivery system for atrial shunt

The invention belongs to the technical field of medical instruments, and particularly relates to a delivery system for an atrial shunt. The delivery system comprises a first sheath structure, a second sheath structure and an inner core tube structure, the second sheath structure is connected with the first sheath structure and the inner core tube structure, the first sheath structure is used for puncturing and reaming an atrial septum, the second sheath structure is used for collecting the atrial shunt, and the inner core tube structure is connected with the atrial shunt, so that the atrial shunt reaches the atrial septum and is released. The delivery system for the atrial shunt can be helped to be implanted into the human body, the surgery success rate and the surgery operation convenience are improved, the atrial shunt can be implanted only by passing through the femoral vein, then passing through the heart diaphragm and then operating the delivery system, damage to a patient is small, and the service life of the patient is effectively helped to be prolonged.
Owner:QICHEN (SHANGHAI) MEDICAL EQUIP CO LTD

Atrial shunt

The invention discloses an atrial shunt. The atrial shunt is characterized by comprising a right plate surface and a left plate surface which are connected through a waist part, the right plate surface and the left plate surface are provided with a net opening of the right plate surface and a net opening of the left plate surface respectively, the net opening of the right plate surface and the net opening of the left plate surface are communicated, the right plate surface is provided with a wired steel bushing, and the left plate surface is provided with a threaded steel bushing. The atrial shunt is high in adaptability, the sizes of stomas can be maintained, blood flowing is kept, and it is guaranteed that the stomas are not healed for a long time. The plate surfaces of the atrial shunt have certain clamping force on an atrial septum, and the atrial shunt can be stably fixed to the atrial septum and cannot easily fall off or shake. Endothelialization can be quickly achieved between faces, making contact with each other, of the atrial shunt and muscle of the atrial septum, and circulation performance of left and right interatrial holes is not affected. The atrial shunt does not occupy atria, and cannot cause coagulation and thrombi easily. By means of the atrial shunt, operations are convenient, and the atrial shunt can be used through conventional interventional operations.
Owner:SHANGHAI SHAPE MEMORY ALLOY

Interatrial shunt having physiologic sensor

ActiveUS11234702B1Reduce sensitivityReduce potential and consequenceStentsHeart valvesInteratrial shuntRat heart
Interatrial shunts having incorporated physiologic sensors are provided for monitoring and treating cardiovascular syndromes, including heart failure and pulmonary hypertension, in which the one or more sensors are affixed to the shunt to measure a physiologic parameter within the interatrial shunt. The one or more sensors may be directly affixed to or within a lumenal surface of the shunt or may be disposed on a support structure in a spaced relation to the shunt lumen, the one or more sensors disposed at locations subject to little or no pannus formation or cardiac wall motion artifact.
Owner:WAVE LTD V

Conveying device of atrial shunt

The invention relates to the technical field of medical instruments, in particular to a conveying device of an atrial shunt. The device comprises a conveying structure, an expansion structure and a loading structure, the conveying structure comprises a conveying sheathing canal and a conveying handle, the expansion structure comprises an expansion catheter and a reaming piece handle, the loading structure comprises a shunt loading part and a pushing part, a first circular truncated cone is arranged at the far end of the conveying sheathing canal, the lower portion of the proximal end of the first circular truncated cone is provided with a first curved part, the far end of the dilation catheter is provided with a second circular truncated cone, and the lower portion of the proximal end of the second circular truncated cone is provided with a second curved part. The conveying device of the atrial shunt is simple in structure and low in cost, popularization and application of the conveying device in the field of medical instruments are facilitated, meanwhile, conveying of the conveying device is smoother, the sealing performance of the system is high, the preparation process is simplified, and the process cost is greatly reduced.
Owner:QICHEN (SHANGHAI) MEDICAL EQUIP CO LTD

Device for shunting and decompressing atrium

The invention belongs to the technical field of medical instruments, and particularly relates to a device for shunting and decompressing an atrium. The shunting and decompressing device is connected with a conveyor, and comprises a wire harness collector, a left atrium wall fixing structure, a middle connecting channel and a right atrium wall fixing structure, wherein the left atrium wall fixing structure communicates with the right atrium wall fixing structure through the middle connecting channel; one end of the wire harness collector is connected with the left atrium wall fixing structure,and the other end of the wire harness collector is connected with the conveyor; and the left atrium wall fixing structure and the right atrium wall fixing structure are pressed against the two sides of an atrium wall respectively, and are connected with the atrium through the middle connecting channel to shunt and decompress the atrium. By adopting the device, the pressure of the atrium can be lowered, the service life of the atrium is prolonged, heart failure is relieved, and the surgical success rate and surgical operation convenience are increased.
Owner:QICHEN (SHANGHAI) MEDICAL EQUIP CO LTD

Atrial shunt instrument and stoma instrument

The invention relates to an atrial shunt instrument and a stoma instrument. The atrial shunt instrument comprises a traction piece, a cutting piece, a sheathing canal and a control handle, wherein the traction piece, the cutting piece and the sheathing canal are all connected with the control handle; the traction piece is movably contained in the sheathing canal and used for pulling tissue to be cut into the sheathing canal; the control handle comprises a traction piece control assembly and a limiting piece, the traction piece control assembly controls the traction piece to be movably contained in the sheathing canal, and the limiting piece is used for locking the relative position of the traction piece and the sheathing canal; the cutting piece comprises a cutting part; and the cutting part is connected with a radio frequency power supply connector, so the cutting part is electrified to carry out electric cutting when being electrified. When the atrial shunt instrument is used for stoma shunt, a stent does not need to be implanted, and an opening can be prevented from being closed.
Owner:SHENZHEN BETTERWAY MEDTECH CO LTD

Atrial shunt device

The invention discloses an atrial shunt device. The atrial shunt device comprises a storage tube, a supporting tube and a puncture shunt part, wherein a containing space is formed in the storage tube; the supporting tube is arranged in the containing space; the first end of the puncture shunt part is detachably connected with the supporting tube, and a spinal part is arranged at the second end of the puncture shunt part and is configured to be used for puncturing the atrial wall; and the puncture shunt part can move in the axial direction of the storage tube and has a contraction state located in the containing space and an expansion state located outside the containing space, and under the condition that the puncture shunt part is in the expansion state, the puncture shunt part is configured to be fixed to the atrial wall.
Owner:SHANGHAI XINRUI MEDICAL TECH CO LTD

Atrial shunt system

PendingCN113558820ADelay heart failureTreat heart failureHeart valvesApparatus instrumentsRat heart
The invention relates to an atrial shunt system, and belongs to the technical field of medical instruments. The atrial shunt system comprises an atrial shunt conveying device and an atrial shunt, the atrial shunt conveying device comprises a hanging head switch, a sliding valve, a handle, an outer sheath tube, a pushing tube, a control hanging head, an inner sheath tube and a tip end. the inner sheath tube penetrates through the outer sheath tube, and a tip is arranged at one end of the inner sheath tube; a pushing tube is arranged at the tail end of the outer sheath tube, and a control hanging head is arranged at the tail end of the pushing tube; a handle is arranged at the end, close to an operator, of the outer sheath tube; a hanging head switch connected with the control hanging head is arranged on the handle; the handle is further provided with a sliding valve connected with the pushing tube; a gap for mounting the atrial shunt is formed between the outer sheath tube and the inner sheath tube; and the atrial shunt is separated from the atrial shunt conveying device by controlling deformation of the hanging head. According to the atrial shunt system, the heart blood can be shunted, so that the purposes of delaying heart failure and treating heart failure are achieved; and the atrial shunt system is relatively simple in structure and safe and reliable to use.
Owner:SHANGHAI SHAPE MEMORY ALLOY

Conveying device for atrial shunt

The invention discloses a conveying device for an atrial shunt. The conveying device comprises an atrial shunt, an expansion structure used for atrial septum puncture and pore forming, a conveying structure providing a shunt conveying channel, a loading structure used for collecting the atrial shunt, an adjustable hemostasis structure used for preventing blood from flowing out and a pushing structure used for conveying the atrial shunt to the atrial septum and releasing the atrial shunt. The loading structure is connected with the conveying structure and the adjustable hemostasis structure, and the adjustable hemostasis structure is connected with the loading structure; the expansion structure comprises an expansion catheter and a puncture guide wire; the pushing structure comprises a pushing rod, and the conveying structure is formed by the expansion catheter, the puncture guide wire, the atrial shunt and the pushing rod to enter the heart position. The conveying device can help the atrial shunt to be successfully connected with the left atrium and the right atrium, reduces atrial pressure, prolongs the service life of the atrium, relieves heart failure, improves the success rate of surgery and the convenience of surgery operation, is beneficial to long-term health of a patient, and meanwhile is simple in structure and low in manufacturing cost.
Owner:QICHEN (SHANGHAI) MEDICAL EQUIP CO LTD

Atrial shunt implantation stent

InactiveCN113367839AInner diameter changeStentsBlood vesselsBiomedical engineeringAtriocaval shunt
The invention discloses an atrial shunt implant stent. The atrial shunt implantation stent comprises a first stent and a second stent, wherein the first stent comprises a first channel part, an inlet part and an outlet part, and the inlet part and the outlet part are respectively connected to two ends of the first channel part; the first stent has an unfolding state and a contraction state; in the unfolding state, the outer diameter of the inlet part and the outer diameter of the outlet part are both larger than the outer diameter of the first channel part; in the contraction state, the outer diameter of the inlet part and the outer diameter of the outlet part are the same with the outer diameter of the first channel part; the second stent is provided with a second channel part; the second stent is in sleeving and is fixed in the first channel part; the second channel part has an initial state and an expansion state, and the second channel part can be switched from the initial state to the expansion state; and in an initial state, the second channel portion has a first inner diameter, and in an expansion state, the second channel portion has a second inner diameter, wherein the second inner diameter is greater than the first inner diameter.
Owner:SHANGHAI XINRUI MEDICAL TECH CO LTD

Atrial shunt implanting device

ActiveCN113397762AInner diameter changeStentsBlood vesselsBiomedical engineeringHeart atrium
The present disclosure discloses an atrial shunt implanting device. The atrial shunt implanting device comprises a support; the support is provided with a first end, a middle channel part and a second end which are sequentially arranged in the first direction, and the middle channel part is connected with the first end and the second end; the middle channel part has a contraction state and an expansion state in the second direction; in the contraction state, the middle channel part has a first inner diameter in the middle position of the first direction; in the expansion state, the middle channel part has a second inner diameter in the middle position of the first direction; the second inner diameter is larger than the first inner diameter; and the minimum inner diameter of the first end and the minimum inner diameter of the second end are both larger than the first inner diameter and smaller than the second inner diameter.
Owner:项日葵医疗科技(上海)有限公司

Atrial shunt conveying device

The invention discloses an atrial shunt conveying device. The atrial shunt conveying device is provided with a catheter sheath structure, wherein the catheter sheath structure is provided with a pre-bent sheath tube and a catheter sheath handle, wherein the far section of the pre-bent sheath tube is bent; the catheter sheath handle is communicated with the near end of the pre-bent sheath tube and is provided with a hollow cylindrical main body; a sealing gasket with a needle hole is arranged in the cylindrical main body and is provided with a flat sealing gasket and a bent sealing gasket; the bent sealing gasket is tightly attached to the flat sealing gasket. According to the atrial shunt conveying device, the bent sealing gasket in the conventional catheter sheath handle is adjusted into a double-layer sealing gasket, the thickness of each layer of sealing gasket is only half of that of the sealing gasket in the prior art, the sealing gasket close to the near end is changed into a planar sealing gasket, and the sealing gasket at the far end is still bent. The bending amplitude, namely the curvature radius, is adjusted, so that the passing easiness and the sealing property can be guaranteed after an instrument passes through the atrial shunt conveying device. The flat sealing gasket guarantees the sealing property when no instrument passes through the atrial shunt conveying device.
Owner:QICHEN (SHANGHAI) MEDICAL EQUIP CO LTD

Atrial shunt instrument

The invention provides an atrial shunt instrument. The atrial shunt instrument comprises a stent and a conveyor; the stent is of a structure which can be radially contracted and expanded as a whole, and comprises a stent main body which can be implanted and positioned in an atrial septum to construct a stoma, and a recovery part connected to the stent main body; the conveyor comprises a sheathing canal assembly, a grabbing assembly and a handle; the stent is detachably connected onto the far end of the sheathing canal assembly, and the sheathing canal assembly can accommodate the stent which is in a contracted state; the grabbing assembly can be folded or unfolded in the radial direction, the near end of the grabbing assembly is fixedly connected to the far end of the sheathing canal assembly, and the far end of the grabbing assembly is a free end and is provided with a grabbing part extending inwards in the radial direction so as to be combined with or separated from the recovery part of the stent; and the handle is connected to the near end of the sheathing canal assembly and comprises an adjusting assembly connected with the grabbing assembly so as to control the grabbing part to be opened and closed and a conveying assembly used for driving the sheathing canal assembly to move in the axial direction so as to release or contain the stent. According to the atrial shunt instrument of the invention, the stent can be conveniently collected.
Owner:HANGZHOU NOYA MEDTECH CO LTD

Delivery system for atrial shunt

The invention discloses a conveying system for an atrial shunt. The conveying system comprises a conveying structure and a control structure for controlling the axial movement of the conveying structure, the conveying structure comprises a conveying sheathing canal and a pushing rod penetrating through the conveying sheathing canal; the control structure comprises a control part and a conduction part which are connected with each other; the far end of the conduction part is connected with the pushing rod, the control part is rotated to drive the conduction part to move, and then the conduction part drives the pushing rod to move along a channel formed by the conveying sheath tube. The loading, conveying and releasing functions of a traditional atrial shunt conveying device are integrated on one handle, the complexity of the device is reduced, operation is easy, and the receiving speed of a doctor to the device is increased. Finally, the control structure is divided into the first control part and the second control part, and the requirements for refinement and operation time saving in actual operation are flexibly met.
Owner:CHENXING (NANTONG) MEDICAL EQUIP CO LTD

Hole cutting type non-implanted atrial shunt device

The invention relates to the technical field of medical equipment, in particular to a hole cutting type non-implanted atrial shunt device. The device comprises an outer tube and an inner tube arrangedin the outer tube, wherein the end part of one of the outer tube and the inner tube is connected with an ablation assembly; the other end of the other of the outer tube and the inner tube is connected with an anastomosis assembly; the ablation assembly is connected with a radio frequency ablation instrument; and when the inner tube and / or the outer tube are / is moved, and the ablation assembly andthe anastomosis assembly move oppositely to cut an atrial septum located between the ablation assembly and the anastomosis assembly. A hole is formed in a radio frequency mode by using the ablation assembly and the anastomosis assembly, and the formed hole is not prone to being closed again and allows left atrial blood pressure to be effectively guided to the right atrium, so the purpose of treatment is achieved.
Owner:SHANGHAI SHAPE MEMORY ALLOY

Interatrial shunts having biodegradable material, and methods of making and using same

A device for regulating blood pressure between a patient's left atrium and right atrium comprises an hourglass-shaped stent comprising a neck region and first and second flared end regions, the neck region disposed between the first and second end regions and configured to engage the fossa ovalis of the patient's atrial septum, and a drug-eluting biodegradable material that biodegrades over time to release a drug that limits tissue overgrowth. The inventive device also may include a biodegradable material that biodegrades to offset flow changes caused by tissue overgrowth. The inventive device may reduce left atrial pressure and left ventricular end diastolic pressure, and may increase cardiac output, increase ejection fraction, relieve pulmonary congestion, and lower pulmonary artery pressure, among other benefits.
Owner:WAVE LTD V

Devices with dimensions that can be reduced and increased in vivo, and methods of making and using the same

Devices are provided with an internal dimension that can be reduced and increased in vivo. In one example, an interatrial shunt for placement at an atrial septum of a patient's heart includes a body. The body includes first and second regions coupled in fluid communication by a neck region. The body includes a shape-memory material. The body defines a passageway through the neck region for blood to flow between a first atrium and a second atrium. The first and second regions are superelastic at body temperature, and the neck region is malleable at body temperature. A flow area of the passageway through the neck region may be adjusted in vivo.
Owner:WAVE LTD V

Atrial shunt conveying system based on electric control

The invention belongs to the technical field of medical instruments, and particularly relates to an atrial shunt conveying system based on electric control. The atrial shunt conveying system comprises a first sheath structure, a second sheath structure, an inner core tube structure and electric control assemblies; the second sheath structure is connected with the first sheath structure and the inner core tube structure, and the inner core tube structure is connected with an atrial shunt; the second sheath structure and the inner core tube structure are provided with the electric control assemblies respectively; the first sheath structure is used for atrial septum puncture reaming, and the second sheath structure is used for collecting the atrial shunt; and the atrial shunt reaches the atrial septum and is released by adjusting the electric control assemblies. According to the system, automatic adjustment can be realized to improve the positioning precision, and manual fine adjustment is also considered to realize accurate positioning, accurate release and convenient operation.
Owner:QICHEN (SHANGHAI) MEDICAL EQUIP CO LTD

An atrial shunt device

The present disclosure discloses an atrial shunt device. The atrial shunt device includes a storage tube, a support tube, and a puncture shunt. The storage tube has an accommodating space; the support tube is arranged in the accommodating space; the first end of the puncture shunt and the support tube can be The connection is disassembled, the second end of the puncture shunt is provided with a spike, and the spike is configured to pierce the atrial wall; the puncture shunt can move along the axial direction of the receiving tube, and having a contracted state within the receiving space and an expanded state outside the receiving space, the piercing shunt being configured to be fixed to the atrial wall when the piercing shunt is in the deployed state place.
Owner:SHANGHAI XINRUI MEDICAL TECH CO LTD

A highly stable and adaptively adjustable atrial shunt device

The invention discloses a high-stability type atrial shunting device with a self-adaptive adjustment function. A left atrial disc surface and a right atrial disc surface are integrally connected through a connecting column. The left atrial disc surface and the right atrial disc surface are provided with a left atrial shunting port and a right atrial shunting port in the upper and lower ends of theconnecting column respectively, and the connecting column is internally provided with a through hole. The inner walls of the left atrial shunting port and right atrial shunting port are provided withopening restraining filaments. The high-stability type atrial shunting device with the self-adaptive adjustment function can offset the reduction of the size of a shunting hole caused by endothelialization of cells at the shunting hole and achieve pressure balance of the left and right atriums. The invention also discloses a tightness adjustment driving device used for intervention of the high-stability type atrial shunting device with the self-adaptive adjustment function. The end, close to a limiting cylinder, of a rotating groove is provided with a rotating cavity, and the structural sizeof the inner wall of the rotating cavity is the same as that of the outer wall of a rotating head. The atrial shunting device is simple in structure and convenient to operate and use and can adaptively adjust the length of the opening restraining filaments so as to achieve adjustment of the size of the shunting hole.
Owner:WUHAN VICKOR MEDICAL TECH CO LTD

Lockable rivet-free biological atrial shunt device

The invention relates to a lockable rivet-free biological atrial shunt device, and belongs to the technical field of medical instruments. The device comprises an upper disc surface, a waist part, a lower disc surface, a shunt hole and a locking structure, the waist part for connecting the upper disc surface and the lower disc surface is arranged between the upper disc surface and the lower disc surface, the shunt hole is formed in the waist part, the two ends of the shunt hole are respectively opened on the disc surfaces of the upper disc surface and the lower disc surface, and a through hole is formed between the openings at the two ends; and the locking structure is arranged between the lower disc surface and the upper disc surface on the outer side of the waist part. The atrial shunt device provided by the invention is made of a biodegradable material, adopts a rivet-free design, is provided with a lockable form and can be developed; the product provided by the invention can be locked, and a shunt can be firmly fixed at a defect position, so that the stability of the shunt after implantation is greatly improved; the device can be used for treating heart failure.
Owner:SHANGHAI SHAPE MEMORY ALLOY
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