CN215821935U

CN215821935U - Heparin cap with protective sleeve

Info

Publication number: CN215821935U
Application number: CN202121092985.7U
Authority: CN
Inventors: 严秀友; 肖炳祥
Original assignee: Taizhou Central Hospital Taizhou University Hospital
Current assignee: Taizhou Central Hospital Taizhou University Hospital
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2022-02-15
Anticipated expiration: 2031-05-20

Abstract

The utility model provides a heparin cap with a protective sleeve, which solves the problems of easy pollution and the like when the heparin cap is injected, and comprises a connecting base with a connecting pipe orifice, wherein the outer side of one end, far away from the connecting pipe orifice, of the connecting base is in threaded connection with an injection base, the injection port of the injection base is sealed by a rubber block, the injection base is provided with a connecting section in threaded connection with the connecting base and a sealing section connected with the rubber block, the outer side of the connecting section is in threaded connection with a protective sleeve sleeved outside the injection base, the protective sleeve is provided with a main sleeve in threaded connection with the connecting section and an auxiliary sleeve sleeved outside the sealing section, the top of the protective sleeve is provided with a socket opposite to the injection port of the injection base, and the socket is sealed by the rubber sleeve. The utility model has the advantages of good sealing effect, stable structure and the like.

Description

Heparin cap with protective sleeve

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a heparin cap with a protective sleeve.

Background

The heparin cap imitates the effect of the Rieful principle on the vein indwelling needle tube sealing, so that the medical cost of a patient is reduced, and the working efficiency of nurses is improved. It can be used in conjunction with the arteriovenous retention needle for multiple and repeated puncture for infusion and injection. The standard locking joint is injected with heparin sodium to prevent blood backflow and anticoagulation. The application of heparin cap imitation method to seal the tube can prolong the service life of the vein indwelling needle and reduce the medical cost of the patient. When the conventional heparin cap and indwelling needle combined instrument is used, the top of the heparin cap is exposed to the air after infusion is finished, so that the outside of the heparin cap is easily polluted. In addition, the heparin cap is not easy to maintain the sterile state inside during the process of injecting the medicine.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, the chinese patent document discloses a heparin cap protector [201520588011.6] that includes a housing, a sealing groove, a sealing ring, a flange, a button, and a snap. Wherein the seal groove is arranged around the inner wall of the shell, the seal ring is arranged in the seal groove, the flange surrounds the outer wall of the shell and protrudes outwards from the outer wall integrally, the button protrudes upwards from the top of the shell integrally, the buckle is connected to the outer wall of the shell and extends downwards, and when the heparin cap protection device is arranged on the heparin cap, the buckle is clamped on the opening of the heparin cap.

The scheme solves the problem that the heparin cap is easy to be polluted when exposed to the outside to a certain extent, but the scheme still has a plurality of defects, such as the problem that the inner part of the heparin cap cannot keep a sterile state during injection, and the like.

Disclosure of Invention

The utility model aims to solve the problems and provides a heparin cap with a protective sleeve, which is reasonable in design and not easy to pollute the interior.

In order to achieve the purpose, the utility model adopts the following technical scheme: this take heparin cap of protective sheath, including having the orificial connection base of take, connection base keeps away from orificial one end outside threaded connection and has the injection base, the injection port of injection base is sealed by the block rubber, the injection base has the linkage segment with connection base threaded connection and the closed section of being connected with the block rubber, linkage segment outside threaded connection has the sheath of cover in the injection base outside, the sheath has the main cover with linkage segment threaded connection and the vice cover of cover in the closed section outside, open at the sheath top has the socket relative with the injection port of injection base, the socket is sealed by the block rubber. The connection base and the sheath form a double-layer closed structure, and the rubber block and the rubber sleeve are used for inserting and injecting the needle head, so that a better protection effect is achieved, and the sterile environment of the cavity inside the heparin cap is ensured.

In the heparin cap with the protective sleeve, the connecting base comprises a sealing cylinder which is circumferentially surrounded relative to the connecting pipe opening, and the other end of the connecting base is provided with a connecting cylinder of which the outer side is in threaded connection with the inner side of the injection base. The sealing cylinder and the connecting cylinder are combined to realize the fixed connection with the indwelling needle.

In the heparin cap with the protective sleeve, the inner side of the sealing barrel is provided with a plurality of compression convex strips which are circumferentially surrounded and axially extend, and the inner side of the joint of the connecting barrel and the sealing barrel is provided with a plurality of reinforcing ribs which are symmetrical relative to the central axis of the connecting base. Compress tightly the sand grip and improve and keep somewhere the connection stability of needle, inboard strengthening rib has improved connection base's structural strength.

In the heparin cap with the protective sleeve, an injection cavity is arranged between the connecting base and the inner side of the injection base, the injection cavity is communicated with the connecting pipe port of the connecting base, and the other end port of the injection cavity is tightly pressed and sealed by the rubber block. Heparin sodium can be injected into the injection cavity to prevent blood backflow and prevent coagulation.

In the heparin cap with the protective sleeve, the end face of one end, opposite to the connecting base, of the injection base is attached to and pressed against the sealing cylinder of the connecting base, a sealing groove surrounding the outer side of the injection base is reserved between the end face of one end, opposite to the connecting base, of the protective sleeve and the sealing cylinder of the connecting base, and a sealing ring attached to and pressed against the connecting base, the injection base and the protective sleeve is sleeved in the sealing groove. The sealing ring plays a better sealing role at the joint of the connecting base, the injection base and the sheath, and the connecting tightness of the joint is improved.

In the heparin cap with the protective sleeve, the pipe connecting opening of the connecting base is in a cone-shaped cylinder, and a pipe connecting groove is reserved between the outer side of the pipe connecting opening and the inner side of the sealing cylinder of the connecting base. The pipe connecting groove is used for connecting the pipe body or the remaining needle, and the conical pipe connecting opening is convenient for connecting the base and the pipe body in a butt joint mode.

In the heparin cap with the protective sleeve, the main sleeve of the protective sleeve is tightly attached to the connecting section of the injection base, and an isolation cavity is reserved between the inner side of the auxiliary sleeve of the protective sleeve and the outer side of the sealing section of the injection base. The isolation cavity is arranged between the injection base and the sheath, and plays an isolation protection role in the internal injection cavity.

In foretell take heparin cap of protective sheath, the socket sets up in sheath end center department, and the rubber sleeve cladding is in the sheath end outside and with the inboard laminating of socket compress tightly. The rubber sleeve wraps the end of the sheath, so that the air tightness of the joint of the rubber sleeve is further improved.

In the heparin cap with the protective sleeve, the connecting base, the injection base and the protective sleeve are made of transparent materials. The transparent material is selected to be beneficial to an operator to observe the internal state of the heparin cap, so that the injection operation is convenient.

In the heparin cap with the protective sleeve, the thickness of the injection base is equal to that of the protective sleeve. The injection base and the sheath have consistent side structure strength, and the stable structure of the joint is ensured.

Compared with the prior art, the utility model has the advantages that: the injection base and the sheath form a double-layer structure, and the rubber sleeve and the rubber block are matched to play a good sealing role on the inner cavity of the heparin cap, so that the sterile environment in the heparin cap is ensured; the sealing groove and the sealing ring seal joints of the connecting base, the injection base and the sheath, so that the installation stability of the connecting base, the injection base and the sheath is improved; the reinforcing ribs on the inner side of the connecting base improve the structural strength of the connecting base, so that the connecting base is stably connected with the indwelling needle.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an expanded schematic view of the present invention;

FIG. 3 is a structural cross-sectional view of the present invention;

in the figure, a connection base 1, a pipe connection opening 11, a sealing cylinder 12, a connection cylinder 13, a pressing convex strip 14, a reinforcing rib 15, an injection cavity 16, a pipe connection groove 17, an injection base 2, an injection opening 21, a connection section 22, a closing section 23, a protective sleeve 3, a main sleeve 31, an auxiliary sleeve 32, a socket 33, an isolation cavity 34, a rubber block 4, a rubber sleeve 5, a sealing groove 6 and a sealing ring 61.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-3, the heparin cap with the protective sleeve comprises a connection base 1 with a nozzle 11, an injection base 2 is in threaded connection with the outer side of one end of the connection base 1 far away from the nozzle 11, an injection port 21 of the injection base 2 is sealed by a rubber block 4, the injection base 2 is provided with a connection section 22 in threaded connection with the connection base 1 and a sealing section 23 connected with the rubber block 4, a protective sleeve 3 sleeved outside the injection base 2 is in threaded connection with the outer side of the connection section 22, the protective sleeve 3 is provided with a main sleeve 31 in threaded connection with the connection section 22 and an auxiliary sleeve 32 sleeved outside the sealing section 23, a socket 33 opposite to the injection port 21 of the injection base 2 is arranged at the top of the protective sleeve 3, and the socket 33 is sealed by the rubber sleeve 5. Injection base 2 and connection base 1 outside threaded connection, sheath 3 and injection base 2 outside threaded connection, the syringe needle passes rubber sleeve 5 and block rubber 4 in proper order during the injection, and the intermediate layer between injection base 2 and the sheath 3 prevents that outside bacterium from invading inside the heparin cap along the syringe needle.

Specifically, the connection base 1 comprises a sealing cylinder 12 circumferentially surrounding the connection pipe orifice 11, and the other end of the connection base 1 is provided with a connection cylinder 13, the outer side of which is in threaded connection with the inner side of the injection base 2. The inner side of the sealing cylinder 12 is fixedly connected with the remaining needle in an inserting way, and the connecting cylinder 13 is connected with the injection base 2 to realize the sealing of the inner cavity.

Deeply, a plurality of compression convex strips 14 which circumferentially surround and axially extend are arranged on the inner side of the sealing cylinder 12, and a plurality of reinforcing ribs 15 which are symmetrical relative to the central axis of the connecting base 1 are arranged on the inner side of the joint of the connecting cylinder 13 and the sealing cylinder 12. Compress tightly sand grip 14 and play when connection base 1 is connected with the transfer line and compress tightly the fixed action to the outside of the body, improve the stability of its junction, the inboard strengthening rib 15 of connecting cylinder 13 improves the structural strength of its handing-over department, and the sealed 12 outside of a section of thick bamboo distributes along circumference has anti-skidding stripe, knob fixed connection base 1 and injection base 2 when easy to assemble.

Further, an injection cavity 16 is arranged between the connecting base 1 and the inner side of the injection base 2, the injection cavity 16 is communicated with the nozzle 11 of the connecting base 1, and the other end port is pressed and closed by the rubber block 4. The rubber block 4 at the port of the injection cavity 16 is fixedly connected with the injection base 2,

furthermore, the end face of the end, opposite to the connection base 1, of the injection base 2 is attached to and pressed against the sealing cylinder 12 of the connection base 1, a sealing groove 6 surrounding the outer side of the injection base 2 is reserved between the end face of the end, opposite to the connection base 1, of the sheath 3 and the sealing cylinder 12 of the connection base 1, and a sealing ring 61 attached to and pressed against the connection base 1, the injection base 2 and the sheath 3 is sleeved in the sealing groove 6. The jacket 3 applies pressing force to the sealing ring 61 in the rotating and fixing process, so that the sealing performance of the sealing ring 61 and the sealing groove 6 is improved, and a gap at the threaded connection position is sealed.

In addition, the connection pipe opening 11 of the connection base 1 is in a cone cylinder shape, and a pipe connection groove 17 is reserved between the outer side of the connection pipe opening 11 and the inner side of the sealing cylinder 12 of the connection base 1. The pipe connecting port 11 protrudes outwards relative to the sealing cylinder 12 of the connection base 1, and the pipe connecting groove 17 between the pipe connecting port and the sealing cylinder is matched with the pressing convex strip 14 to improve the connection stability of the pipe connecting port.

Meanwhile, the main sleeve 31 of the sheath 3 is attached and pressed with the connecting section 22 of the injection base 2, and an isolation cavity 34 is reserved between the inner side of the auxiliary sleeve 32 of the sheath 3 and the outer side of the closed section 23 of the injection base 2. The main sleeve 31 and the auxiliary sleeve 32 of the sheath 3 are connected into a whole, the joint is step-shaped, and the step structure of the main sleeve and the auxiliary sleeve is consistent with the step structure of the outer side of the injection base 2.

Visibly, the inserting hole 33 is arranged at the center of the end of the sheath 3, and the rubber sleeve 5 is covered on the outer side of the end of the sheath 3 and is attached and pressed with the inner side of the inserting hole 33. The rubber sleeve 5 covers the whole end face of the sheath 3, and the contact surface between the rubber sleeve 5 and the sheath 3 is increased.

Obviously, the connection base 1, the injection base 2 and the sheath 3 are made of transparent materials. The connecting base 1, the injection base 2 and the sheath 3 are made of transparent plastics, so that the structural strength of the connecting base is guaranteed, and the state of the needle is not influenced during injection.

Preferably, the injection base 2 has a thickness equal to the thickness of the sheath 3. Injection base 2 and sheath 3 are independent relative to connection base 1, and after detecting its isolation chamber 34 leakproofness after will injecting base 2 and sheath 3 threaded connection during the installation, with its and connection base 1 fixed connection.

In summary, the principle of the present embodiment is: the connecting base 1 and the injection base 2 are in threaded connection to form a heparin cap main body, the outer side of the injection base 2 is in threaded connection with a sheath 3 covering an injection port 21 of the injection base, an isolation cavity 34 is reserved between the injection base 2 and the sheath 3, and a needle head sequentially penetrates through a rubber sleeve 5 of the sheath 3, the isolation cavity 34 and a rubber block 4 at the end of the injection base 2 during injection.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms of the connection base 1, the connection nozzle 11, the sealing cylinder 12, the connection cylinder 13, the compression rib 14, the reinforcing rib 15, the injection cavity 16, the connection nozzle groove 17, the injection base 2, the injection nozzle 21, the connection section 22, the closing section 23, the sheath 3, the main sleeve 31, the auxiliary sleeve 32, the socket 33, the isolation cavity 34, the rubber block 4, the rubber sleeve 5, the sealing groove 6, the sealing ring 61, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A heparin cap with a protective sleeve comprises a connecting base (1) with a nozzle (11), wherein the connecting base (1) is connected with an injection base (2) in a threaded manner at the outer side of one end, away from the nozzle (11), of the connecting base (1), an injection port (21) of the injection base (2) is sealed by a rubber block (4), and the heparin cap is characterized in that the injection base (2) is provided with a connecting section (22) in a threaded manner with the connecting base (1) and a sealing section (23) connected with the rubber block (4), a protective sleeve (3) sleeved outside the injection base (2) is in threaded connection with the outer side of the connecting section (22), the protective sleeve (3) is provided with a main sleeve (31) in a threaded manner with the connecting section (22) and an auxiliary sleeve (32) sleeved outside the sealing section (23), a socket (33) opposite to the injection port (21) of the injection base (2) is formed in the top of the protective sleeve (3), the insertion opening (33) is closed by a rubber sleeve (5).

2. Heparin cap with protective sleeve according to claim 1, characterized in that the connection base (1) comprises a sealing cylinder (12) surrounding the circumference of the butt pipe orifice (11), and the other end of the connection base (1) is provided with a connection cylinder (13) with the outer side screwed with the inner side of the injection base (2).

3. Heparin cap with protective sleeve according to claim 2, characterized in that the sealing cylinder (12) is provided with a plurality of compression ribs (14) extending circumferentially and axially inside, and a plurality of reinforcing ribs (15) symmetrical with respect to the central axis of the connection base (1) are provided inside the junction of the connection cylinder (13) and the sealing cylinder (12).

4. Heparin cap with protective sleeve according to claim 2, characterized in that an injection cavity (16) is arranged between the connection base (1) and the inner side of the injection base (2), the injection cavity (16) is communicated with the connection port (11) of the connection base (1) and the other end port is pressed and closed by the rubber block (4).

5. The heparin cap with the protective sleeve according to claim 2, wherein the end face of the end, opposite to the connecting base (1), of the injection base (2) is attached to and pressed against the sealing cylinder (12) of the connecting base (1), a sealing groove (6) surrounding the outer side of the injection base (2) is reserved between the end face of the end, opposite to the connecting base (1), of the protective sleeve (3) and the sealing cylinder (12) of the connecting base (1), and a sealing ring (61) attached to and pressed against the connecting base (1), the injection base (2) and the protective sleeve (3) is sleeved in the sealing groove (6).

6. Heparin cap with protective sleeve according to claim 2, characterized in that the connection tube opening (11) of the connection base (1) is in a cone cylinder shape, and a tube connecting groove (17) is reserved between the outer side of the connection tube opening (11) and the inner side of the sealing cylinder (12) of the connection base (1).

7. Heparin cap with protective sleeve according to claim 1, characterized in that the main sleeve (31) of the sheath (3) is pressed against the connecting section (22) of the injection base (2), and an isolation cavity (34) is left between the inner side of the secondary sleeve (32) of the sheath (3) and the outer side of the closing section (23) of the injection base (2).

8. Heparin cap with protective sleeve according to claim 7, wherein the insertion opening (33) is arranged at the center of the end of the protective sleeve (3), and the rubber sleeve (5) covers the outer side of the end of the protective sleeve (3) and is attached and pressed with the inner side of the insertion opening (33).

9. Heparin cap with protective sleeve according to claim 1, characterized in that the connection base (1), the injection base (2) and the sheath (3) are made of transparent materials.

10. Heparin cap with protective sleeve according to claim 1, characterized in that the thickness of the injection base (2) is equal to the thickness of the sheath (3).