Vascular suturing device with needle capture

Abstract

A surgical device of suturing vascular vessels is described, as well as methods for suturing tissue employing the surgical device. The device includes at least one needle advanceable through tissue and into a needle capture element within a distal end of the surgical device to draw lengths of suture material which can then be used to close various puncture wounds, particularly in vascular tissue.

Description

BACKGROUND OF THE INVENTION[0001]The present invention generally relates to surgical instruments and methods of suturing tissue.[0002]A number of diagnostic and treatment procedures are conducted intravascularly. Typically, a catheter is introduced into the vascular system at a convenient access location and is then guided to the target treatment site. The Seldinger Technique is one of the well-known early examples of this type of procedure which can include catheterization and angioplasty techniques. Procedures such as this require a vascular access. Typically an introducer sheath with or without a guide wire is inserted through a puncture wound in a vessel such as the femoral artery at a location near the groin. A catheter and other instrumentation can then be inserted through the sheath and guided to the targeted treatment site. After the diagnostic and / or treatment procedure has been completed, the puncture wound must be closed. Closing the wound can be difficult because of the ...

AI Technical Summary

Benefits of technology

[0008]In another form, the present invention provides a method of suturing vascular tissue adjacent an opening in a vascular vessel. The method uses a suturing device which can be inserted through the opening in the vascular vessel. The device comprises: a proximal member with a needle channel formed therein; a distal member configured to be inserted into the lumen of the vascular vessel, where the distal member has a receptacle that includes a needle capture element and which is sized to receive at least one needle; and an intermediate member disposed between the proximal member and the distal member. The intermediate member defines a tissue receiving area and is configured to provide a linear needle pathway between the channel and the receptacle. A needle is advanced through or along the needle channel to pierce the vascular tissue drawing a portion of the length of suture material through the vascular tissue. The needle is further advanced so that a portion of the needle engages with the needle capture element in the receptacle. Preferable the needle capture element prevents and in adverting dislodging of the needle from the receptacle during the surgical procedure. However, the same needle capture element also allows the surgeon to remove the needle when and if desired.

Problems solved by technology

Closing the wound can be difficult because of the substantial bleeding that can occur through an open wound in the vascular vessel.

This approach suffers from many deleterious effects, not the least of which are that it can be time consuming and extremely uncomfortable—even painful—for the patient because the pressure is applied directly on or adjacent to the traumatized site.

During this initial recovery period, it is imperative that the patient remain still, further adding to the patient's discomfort.

This can be extremely difficult because the vascular vessel with the puncture lies underneath the patient's outer skin.

Some vascular vessels, notably the femoral artery, appear to be relatively large; however, in practice, even the largest arteries cannot be readily sutured.

However, under certain conditions the needles may not be fully captured within the depository or the needles can become dislodged upon removal of the device from the patient.

This can be particularly prone to occur when the needles remain attached to the suture material.

This can result in snagging and possibly tearing of the vascular tissue or the upper tissue layers depending upon when the needles become dislodged.

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