CN-122003211-A - Hemostatic instrument and hemostatic instrument set

CN122003211ACN 122003211 ACN122003211 ACN 122003211ACN-122003211-A

Abstract

Provided are a hemostatic instrument and a hemostatic instrument set, wherein the occurrence of a decrease in the sealing performance of a connector portion due to foreign matter entering the lumen of the connector portion can be prevented. The injection member (200) of the hemostatic instrument (10) comprises a connector portion (210) and a connecting portion (220) connecting the inner cavity of the connector portion and the inner cavity (170 a) of the expansion member (170), the check valve member (300) provided in the connector portion (210) comprises an outer side member (310), an inner side member (320) positioned in the inner cavity (316) of the outer side member and a spring member (390) connected with the inner side member, the inner side member comprises a main body portion (330) and a terminal protruding portion (340), the main body portion (330) is configured to be in contact with the inner side protruding portion (315) in a natural state of the spring member, the terminal protruding portion (340) protrudes from the terminal end of the main body portion to the terminal opening portion (311), the upper end portion (350) provided in the terminal protruding portion is provided with a concave portion (353) recessed toward the main body portion, the side wall portion (360) provided in the terminal protruding portion is provided with a slit portion (361) continuous with the concave portion and extending in the length direction of the inner side member, the concave portion is provided with a capturing portion (355), and the width (W1) of the capturing portion (355) is narrowed from the outer edge (351) of the upper end portion (1) in the upper side of the center position in a top view.

Inventors

Lin Anghui
TIAN ZHONGMING
KAWASUMI KENTA

Assignees

泰尔茂株式会社

Dates

Publication Date: 20260508
Application Date: 20240829
Priority Date: 20230929

Claims (13)

1. A hemostatic instrument, wherein the hemostatic instrument comprises a body, The hemostatic instrument is provided with: a cover member configured to cover a puncture site formed in a patient; an expansion member connected to the cover member for pressing the puncture site, and An injection member configured to be coupled to the expansion member, the injection member being capable of injecting a fluid into the expansion member, The injection member has a coupler portion and a coupling portion for coupling the lumen of the coupler portion with the lumen of the expansion member, The coupler portion has a check valve member configured to control communication of an inner cavity of the coupler portion with the outside, and a connection member for connecting the check valve member with the coupler portion, The check valve member has an outer member, an inner member positioned within the inner cavity of the outer member, and a spring member coupled to the inner member, The outer member includes a distal opening configured to expose a portion of the inner member to the outside, a proximal opening configured to communicate a lumen of the outer member with a lumen of the connecting member, and an inner protruding portion configured to prevent the inner member from moving toward the distal opening, The spring member is located between the base end opening portion and the inner protruding portion in a natural state to maintain contact of an outer surface of the inner member with the inner protruding portion, The inner member has a main body portion configured to be in contact with the inner protruding portion in a natural state, and a distal protruding portion protruding from a distal end of the main body portion toward the distal opening portion side, The tip protrusion has an upper end portion and a side wall portion connecting the upper end portion with the main body portion, The upper end portion has a concave portion recessed toward the main body portion side, The side wall portion has a slit portion continuous with the recess portion and extending in a longitudinal direction of the inner member, The recessed portion has a trap portion, and a width of the trap portion is narrowed from a center position of the upper end portion to an outer edge portion of the upper end portion in a plan view.
2. The hemostatic instrument of claim 1, wherein, The concave portion is connected to the slit portion via the trap portion.
3. The hemostatic instrument of claim 1, wherein, The upper end portion has a1 st convex portion formed at an outer edge portion of the upper end portion.
4. The hemostatic instrument of claim 3, wherein, The upper end portion has a plurality of upper surface portions located on the same plane.
5. The hemostatic instrument of claim 4, wherein, The upper surface portion has a2 nd convex portion formed on an inner edge portion of the upper surface portion.
6. The hemostatic instrument of claim 1, wherein, The outer diameter of the upper end portion is larger than the inner diameter of the distal opening portion.
7. The hemostatic instrument of claim 1, wherein, The spring member is configured to hold an end of the slit portion on the main body portion side at a position closer to the distal opening portion side than the inner protruding portion in a natural state, When a pushing force in the direction of the base end opening is applied to the spring member, the spring member moves the end of the slit portion to a position closer to the base end opening than the inner protruding portion.
8. The hemostatic instrument of claim 1, wherein, The concave part is provided with a notch part connecting the center position of the upper end part with the side surface of the upper end part, The width of the notch portion gradually narrows toward the main body portion side.
9. The hemostatic instrument of claim 8, wherein, The notch portions are arranged at equal intervals in the circumferential direction of the upper end portion with respect to the center position of the upper end portion.
10. The hemostatic instrument of claim 1, wherein, The slit portion has a predetermined depth in a direction from the side wall portion side toward a center position side of the upper end portion.
11. The hemostatic instrument of claim 1, wherein, The slit portion extends in a substantially constant width along a longitudinal direction of the side wall portion.
12. The hemostatic instrument of claim 1, wherein, The upper end portion includes a1 st region and a2 nd region, the 1 st region includes an upper surface portion, the 2 nd region forms a bottom portion of the recess, The slit portion has an end portion located on the main body portion side and is located on the main body portion side of the 2 nd region.
13. A hemostatic instrument set, wherein the hemostatic instrument set has: The hemostatic instrument according to any one of claims 1 to 12, and A fluid injection device having a front tube portion in contact with the upper end portion, An upper surface portion of the upper end portion that abuts the front tube portion has an outer diameter larger than that of the front tube portion in a plan view.

Description

Hemostatic instrument and hemostatic instrument set Technical Field The present invention relates to a hemostatic instrument and a hemostatic instrument set. Background As one of catheter techniques, a technique is known in which various medical elongate bodies are introduced into blood vessels through puncture sites formed by puncturing blood vessels of limbs such as arms and hands of a patient, and diagnosis and treatment of a lesion site are performed. For example, patent document 1 discloses a hemostatic instrument that can stop bleeding at a puncture site formed so as to be capable of accessing a blood vessel (including a distal radial artery) that is shaped in a hand. The hemostatic instrument of patent document 1 includes an expansion member that applies a pressing force to a puncture site formed in a hand of a patient, a cover member that fixes the expansion member to the hand of the patient, a connector portion (port portion) configured to be able to inject a fluid for expanding the expansion member, and a connecting portion (tube portion) that connects the connector portion to an inner cavity of the expansion member. Prior art literature Patent literature Patent document 1 U.S. patent application publication No. 2019/0133702 specification Disclosure of Invention Technical problem to be solved by the invention When a surgeon or the like (hereinafter referred to as "surgeon") uses the hemostatic instrument of patent document 1 to stop bleeding at a puncture site formed in a patient's hand, the hemostatic instrument is fixed to the patient's hand in a state in which the dilating member is disposed at the puncture site formed in the patient's hand. The operator can apply a pressing force to a puncture site formed in the hand of the patient from the expanding member by expanding the expanding member in a state where the hemostatic instrument is fixed to the hand of the patient. When the applicator expands the expansion member, a fluid injection tool such as a syringe for injecting a fluid is connected to the coupler portion. In the above-described hemostatic instrument, for example, a check valve (valve element) is disposed in the connector portion, and the check valve is used to shut off fluid communication between the inner cavity of the expansion member and the outside of the connector portion in a state where the fluid injection instrument is not connected. The applicator connects the fluid injection tool to the coupler portion, and pushes the check valve disposed inside the coupler portion by the fluid injection tool, thereby moving the check valve from a predetermined closed position to a predetermined open position of the coupler portion. By moving the check valve to a predetermined open position, the operator can bring the fluid holding portion (outer tube portion) of the fluid injection tool into fluid communication with the inner cavity of the expansion member via the connection portion (front tube portion) of the fluid injection tool. The operator can expand the expansion member by operating the fluid injection tool to inject fluid into the lumen of the expansion member while placing the fluid holding portion of the fluid injection tool in fluid communication with the lumen of the expansion member. After the applicator expands the expansion member, the fluid injection instrument is pulled out from the coupler portion. When the operator pulls the fluid injection apparatus from the coupler portion, the check valve disposed inside the coupler portion moves to a closed position inside the coupler portion. When the check valve is moved to a closed position within the coupler portion, the hemostatic instrument described above again cuts off fluid communication between the inner lumen of the expansion member and the exterior of the coupler portion. The connector portion provided in the hemostatic instrument of patent document 1 may be configured to allow a part of the fluid injection instrument to be inserted into the connector portion as described above. In the case of using the connector portion, the hemostatic instrument may be provided with a connection opening portion for maintaining a connection state between the connector portion and the fluid injection instrument. When the hemostatic instrument described above adopts the structure of the connector portion and the connection opening portion, a part of the interior of the connector portion is exposed to the outside of the connector portion through the connection opening portion in a state in which the fluid injection instrument is not connected to the connector portion. In this way, when a part of the inside of the connector portion is exposed to the outside of the connector portion through the connection opening, foreign matter may enter the inside of the connector portion through the connection opening. Therefore, in the case where the above-described hemostatic instrument is configured by the above-described connector portion and the conne