CN-121987301-A - Vascular sheath capable of allowing multiple instruments to pass through

CN121987301ACN 121987301 ACN121987301 ACN 121987301ACN-121987301-A

Abstract

The invention relates to a vascular sheath capable of allowing multiple instruments to pass through, which comprises a tee joint, a sheath tube, a sealing pad and an end cover, wherein the sheath tube extends along the axial direction, the proximal end of the sheath tube is communicated with the tee joint, the sealing pad is arranged at the proximal end of the tee joint, a boss is arranged at the proximal end side of the sealing pad and is provided with a conical circumferential side part, a through hole assembly capable of allowing the multiple instruments to pass through is arranged on the boss, and the end cover is movably sleeved at the proximal end of the tee joint and provided with an end cover bulge, and the end cover bulge is provided with an extrusion conical surface matched with the circumferential side part. The vascular sheath can simultaneously pass a plurality of instruments, and simultaneously has the sealing performance and the passing performance of the instruments.

Inventors

LIU HUA
ZOU ZHIYUAN
LIU KUI
LU HONGXIANG

Assignees

先健科技(深圳)有限公司

Dates

Publication Date: 20260508
Application Date: 20241106

Claims (11)

1. A vascular sheath for multiple instruments therethrough, comprising: A three-way joint; A sheath tube extending axially, the proximal end of which communicates with the three-way connector; The sealing gasket is arranged at the proximal end of the three-way joint, a boss is arranged at the proximal end side of the sealing gasket, the boss is provided with a conical circumferential side part, and a through hole assembly for the multi-instrument to pass through is arranged on the boss; The end cover is movably sleeved at the proximal end of the three-way joint and provided with an end cover bulge, and the end cover bulge is provided with an extrusion conical surface matched with the circumferential side part; When the end cap is moved distally relative to the three-way fitting, the compression taper compresses the circumferential side such that the through-hole assembly is reduced in size for sealed connection with the multi-instrument.
2. The vascular sheath of claim 1, wherein the gasket further comprises a connector portion coupled to the boss and radially outward of the boss, the connector portion being coupled to the proximal end of the three-way connector.
3. A vascular sheath for the passage of multiple instruments according to claim 2, wherein the distal end of the connector has a connector projection and the proximal end of the three-way connector has a proximal recess, the connector projection being embedded in the proximal recess.
4. A vascular sheath for multiple instruments according to claim 3 wherein the distal end of the connector and radially inward of the connector boss is further provided with a void recess, the void recess having a gap between an inner peripheral portion thereof and an inner wall of the sheath.
5. A vascular sheath for the passage of multiple instruments according to claim 2, wherein the end cap projections are further provided with axial compression portions corresponding to the connection portions, the axial compression portions being operable to compress the connection portions.
6. A vascular sheath for multiple instruments according to claim 2, wherein the thickness of the connecting portion is less than the thickness of the boss.
7. The vascular sheath of claim 1, wherein the aperture assembly includes a central aperture disposed at the center of the boss and at least one peripheral aperture offset from the center of the boss.
8. A vascular sheath for multiple instrument passage according to claim 7, wherein the peripheral holes are circular holes or elongated holes.
9. A vascular sheath for the passage of multiple instruments according to claim 7, wherein the proximal end of the boss is provided with a tapered recess in which the through-hole assembly is disposed.
10. The vascular sheath for passing multiple instruments according to claim 1, wherein a proximal external thread and a first limiting protrusion are sequentially arranged on the periphery of the proximal end side of the three-way joint from the distal end to the proximal end, an end cover internal thread and a second limiting protrusion are sequentially arranged on the inner cavity of the end cover from the distal end to the proximal end, the proximal external thread is meshed with the end cover internal thread, and the first limiting protrusion can be abutted with the second limiting protrusion to limit the vascular sheath.
11. The vascular sheath of claim 1, further comprising a connection sleeve, a head end and a sealing ring, wherein the distal end side of the connection sleeve is provided with a flange, the sheath tube is fixedly embedded in the connection sleeve, the connection sleeve is embedded in the distal end side of the three-way joint, the flange is exposed out of the three-way joint, the sealing ring is arranged between the flange and the three-way joint, and the head end is movably sleeved on the distal end side of the three-way joint, and the inner wall of the head end is abutted against the distal end side of the connection sleeve.

Description

Vascular sheath capable of allowing multiple instruments to pass through Technical Field The invention relates to the field of medical instruments, in particular to a vascular sheath capable of allowing multiple instruments to pass through. Background In vascular interventions, the first step is to establish and maintain a vascular access. Wherein, the vascular sheath is used for assisting various interventional catheters to enter vascular arteries or veins in the percutaneous puncture cannula process, reducing blood loss and providing a stable operation channel. Existing vascular sheaths often pass through only one instrument at a time, such as a single pass through a catheter or guidewire, and cannot pass through multiple instruments simultaneously. When the instrument needs to be replaced, the instrument which has entered the vascular sheath needs to be withdrawn from the vascular sheath before other instruments are replaced to re-enter the vascular sheath, so that the operation is inconvenient in the operation process and the operation time is prolonged. Disclosure of Invention In view of the above, it is desirable to provide a vascular sheath that allows multiple devices to pass through, allows multiple devices to pass through at the same time, and has good sealing properties. The vascular sheath comprises a tee joint, a sheath tube, a sealing pad, an end cover and a sealing sleeve, wherein the sheath tube extends along the axial direction, the proximal end of the sheath tube is communicated with the tee joint, the sealing pad is arranged at the proximal end of the tee joint, a boss is arranged at the proximal end side of the sealing pad, the boss is provided with a conical circumferential side part, a through hole assembly allowing a plurality of instruments to pass through is arranged on the boss, the end cover is movably sleeved at the proximal end of the tee joint and provided with an end cover bulge, the end cover bulge is provided with an extrusion conical surface matched with the circumferential side part, and when the end cover moves distally relative to the tee joint, the extrusion conical surface extrudes the circumferential side part so that the through hole assembly is reduced in size to be connected with the plurality of instruments in a sealing mode. Further, the sealing gasket further comprises a connecting portion which is connected with the boss and located on the radial outer side of the boss, and the connecting portion is connected with the proximal end of the three-way joint. Further, the distal end of the connecting part is provided with a connecting protrusion, the proximal end of the three-way joint is provided with a proximal end groove, and the connecting protrusion is embedded into the proximal end groove. Further, a void groove is provided at the distal end of the connecting portion and radially inside the connecting protrusion, and a gap exists between an inner peripheral portion of the void groove and an inner wall of the sheath tube. Further, the end cover protrusion is further provided with an axial pressing portion corresponding to the connecting portion, and the axial pressing portion can press the connecting portion. Further, the thickness of the connecting portion is smaller than the thickness of the boss. Further, the through hole assembly includes a center hole disposed at the center of the boss and at least one peripheral hole offset from the center of the boss. Further, the peripheral holes are round holes or strip-shaped holes. Further, a proximal end of the boss is provided with a tapered recess in which the through-hole assembly is disposed. Further, a proximal external thread and a first limiting protrusion are sequentially arranged on the periphery of the proximal side of the three-way joint from the distal end to the proximal end, an end cover internal thread and a second limiting protrusion are sequentially arranged in the inner cavity of the end cover from the distal end to the proximal end, the proximal external thread is meshed with the end cover internal thread, and the first limiting protrusion can be abutted with the second limiting protrusion to limit the first limiting protrusion. The connecting sleeve is embedded into the distal end side of the three-way joint, the flange is exposed out of the three-way joint, the sealing ring is arranged between the flange and the three-way joint, and the head end is movably sleeved on the distal end side of the three-way joint, and the inner wall of the head end is abutted to the distal end side of the connecting sleeve. The technical scheme of the invention has the following beneficial effects: The vascular sheath capable of being passed by multiple instruments can be simultaneously passed by multiple instruments to enter a human body, and the end covers respectively squeeze different parts of the sealing gasket from two dimensions (directions), so that the sealing performance and the passing performance of the