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Nasal cannula having improved and asymmetrical flow control

A technology of nasal cannula and diversion surface, applied in the field of nasal cannula with improved asymmetric diversion, can solve problems such as unpredictable gas escape ratio and disadvantage

Pending Publication Date: 2021-04-20
HAMILTON MEDICAL AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of the known nasal cannula is that a relatively large dead space is formed in the region between the coupling opening, which is used as a closed opening by the plug, and the branch opening, in which dead space, when feeding the patient, Uncontrolled flow and swirl of the treatment gas, which leads to disadvantageously unpredictable gas escape ratios at branch openings

Method used

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  • Nasal cannula having improved and asymmetrical flow control
  • Nasal cannula having improved and asymmetrical flow control
  • Nasal cannula having improved and asymmetrical flow control

Examples

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Embodiment Construction

[0052] exist figure 1 In , a first embodiment of the nasal cannula according to the invention is indicated generally at 10 . The nasal cannula 10 includes a dispensing channel member 12 , a plug 14 and a connection nipple 16 . The delivery hose 18 can be attached, in particular screwed, to the longitudinal end 16 b of the connecting piece 16 facing away from the distribution channel component 12 in normal operation.

[0053] The distribution channel component 12 has a distribution channel 20 extending along the distribution path V. As shown in FIG. At axially opposite longitudinal ends of the distribution channel component 12 with respect to the distribution path V, a coupling opening 22 or 24 is formed in each case, through which the distribution channel 20 is accessible. Two supply channels 26 and 28 branch off from the distribution channel component 12 , which open into the distribution channel 20 of the distribution channel component 12 . By means of the load-bearing we...

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Abstract

The invention relates to a nasal cannula (10) for nasally supplying a patient with treatment gas. The nasal cannula (10) comprises a distribution channel component (12) having a distribution channel (20) which runs along a virtual distribution path (V) centrally passing through same, wherein the distribution path (V) defines a longitudinal direction, the distribution channel (20) has two branch openings (26b, 28b), a respective supply channel (26, 28) for supplying the patient with treatment gas from the distribution channel (20) branches off from each branch opening (26b, 28b) to the branch openings (26b, 28b); the distribution channel (20) also has two coupling openings (22, 24) arranged spaced apart from the branch openings (26b, 28b), wherein the nasal cannula (10) has a stopper (14) via which one of the two coupling openings (22, 24) can be sealed as a closure opening (22) against a gas flow by the stopper (14), and wherein another of the two coupling openings (22, 24) is designed as a supply opening (24) for connecting a gas supply line (16, 18) to the distribution channel (20). According to the invention, the stopper (14) has a flow guide formation (42) with an exposed flow guide surface (44), wherein, in a reference state in which the stopper (14) is arranged on the nasal cannula (10) for the purpose of closing the closure opening (22) as intended, the flow guide surface (44) is arranged in the distribution channel (20) in the longitudinal extension region of at least one branch opening (26b, 28b) and positioned relative to the distribution path (V) in such a way that it deflects treatment gas flowing in the distribution channel (20) from the supply opening (24) along the distribution path (V) towards at least one of the branch openings (26b, 28b).

Description

technical field [0001] The present application relates to a nasal cannula for supplying therapeutic gases via the nose to a patient, said nasal cannula comprising a distribution channel member with a distribution channel along a virtual distribution channel running centrally through the distribution channel The path extends, wherein the distribution path defines a longitudinal direction, wherein the distribution channel has two branch openings, wherein a supply channel branches off from each branch opening for supplying therapeutic gas from the distribution channel to the patient, wherein in addition to the branch openings, The distribution channel also has two coupling openings arranged at a distance from the branch opening, wherein the nasal cannula comprises a plug, by means of which one of the two coupling openings can be closed as a closed opening through which gas is prevented from flowing through the plug. , and the other of the two coupling openings is configured as a ...

Claims

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Application Information

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IPC IPC(8): A61M16/06
CPCA61M16/0672A61M2205/6045A61M2206/20A61M16/0816
Inventor 英戈·施魏格尔桑德罗·瓦尔克
Owner HAMILTON MEDICAL AG
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