CN202477800U

CN202477800U - Trocar

Info

Publication number: CN202477800U
Application number: CN2012200249538U
Authority: CN
Inventors: 赵继龙; 王强
Original assignee: Shandong Shinva Ande Healthcare Apparatus Co Ltd
Current assignee: Shandong Shinva Ande Healthcare Apparatus Co Ltd
Priority date: 2012-01-19
Filing date: 2012-01-19
Publication date: 2012-10-10
Anticipated expiration: 2022-01-19

Abstract

The utility model relates to a medical appliance, in particular relates to a trocar which is used for performing subcutaneous puncture and assisting medicament embedment. The trocar comprises a core bar, a needle stand and a needle tube, wherein a through hole is formed in the needle stand, the needle tube is fixedly connected with the needle stand, and the through hole is communicated with the needle tube. A key groove is formed on the inner wall of the through hole of the needle stand, a core bar key and a plurality of keys which are matched with the key groove are arranged on the core bar, and the core bar key is positioned at the tail end of the core bar. The trocar has the advantages that 1, a medicament is positioned and guided in a graded mode; 2, a protection key can avoid misoperation which results in self-locking failure of a product, and a protection function is achieved; and 3, a hook and a needle stand locking hole ensure that the trocar can be locked by self to finish self-destruction after being used, so that secondary use is avoided, and cross infection is prevented.

Description

The trocar

Technical field

This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of subcutaneous puncture that is used for, the auxiliary embedding trocar of medicament of accomplishing.

Background technology

At present, clinically, subcutaneous puncture is used widely; And the mode of embedding medicament is also implemented to come behind the subcutaneous puncture, adopts the trocar, can make its needle point puncture to subcutaneous precalculated position; Insert medicament, extract needle point out, so the trocar can satisfy clinical requirement.

Existing trocar positioning and guiding property generally speaking is bad, and trocar repeated use, causes cross infection easily.

The utility model content

For solving the problems of the technologies described above, this utility model propose a kind of can classification positioning and guiding medicament, and the trocar of locking voluntarily after using.

The technical scheme of this utility model is: a kind of trocar comprises core bar 1, needle stand 2 and needle tubing 3; Be provided with through hole 23 in the said needle stand 2, needle tubing 3 is fixedly connected with needle stand 2, and through hole 23 is communicated with needle tubing 3.

Said needle stand 2 through holes 23 inwalls are provided with keyway 22, and said core bar 1 is provided with the key that core bar key 11 and a plurality of and said keyway 22 are complementary, and core bar key 11 is positioned at core bar 1 end.

The quantity of said key is 1～3.The quantity of key requires to confirm according to clinical practical operation.

Said core bar 1 top is provided with the protected key 14 that is complementary with keyway 22.

Said core bar 1 top is provided with hook 15, and said needle stand 2 is provided with the lockhole 21 that is complementary with said hook 15.

Said needle tubing 3 outsides are provided with protective sleeve 4, and said protective sleeve 4 is socketed on needle stand 2 ends.

Said keyway 22 cooperates with core bar key 11, key and protected key 14 on the core bar 1, reaches the purpose to core bar 1 stop/release; Lockhole 21 on the needle stand 2 cooperates with the hook 15 of core bar 1, reaches the purpose of core bar 1 and needle stand 2 lockings.

The beneficial effect of this utility model is: 1, classification positioning and guiding medicament; 2, protected key 14 can be avoided maloperation, causes the product self-locking to be lost efficacy, and plays a protective role; 3, hook 15 can lock the completion self-destruction with the trocar that is arranged so that of needle stand 2 lockholes 21 voluntarily after finishing using, and avoids secondary to use, and prevents cross infection.

Description of drawings

Fig. 1 is the structural representation of this utility model;

Fig. 2 is one of structural representation of core bar 1 in this utility model;

Fig. 3 be core bar 1 in this utility model structural representation two;

Fig. 4 is the structural representation of needle stand 2 in this utility model;

Fig. 5 is the phantom of A-A direction among Fig. 4 in this utility model;

Fig. 6 is the structural representation of embodiment 2 in this utility model.

Wherein, 1, core bar, 2, needle stand, 3, needle tubing, 4, protective sleeve; 11, core bar key, 12, key A, 13, key B, 14, protected key, 15, hook; 21, lockhole, 22, keyway, 23, through hole.

The specific embodiment

Specify this utility model below in conjunction with accompanying drawing and embodiment.

Embodiment 1:

Referring to Fig. 1-Fig. 5, this utility model comprises core bar 1, needle stand 2 and needle tubing 3; Be provided with through hole 23 in the needle stand 2, needle tubing 3 is fixedly connected with needle stand 2, and through hole 23 is communicated with needle tubing 3.Needle stand 2 through holes 23 inwalls are provided with keyway 22, and core bar 1 is provided with core bar key 11, key A12 and key B13, and core bar key 11 is positioned at core bar 1 end.Core bar 1 top is provided with the protected key 14 that is complementary with keyway 22.Core bar 1 top is provided with hook 15, and needle stand 2 is provided with the lockhole 21 that is complementary with said hook 15.

The work process of this utility model is following: during use, needle tubing 3 subcutaneous punctures to the precalculated position, are pulled out core bar 1 earlier; Medicament is injected in the needle tubing 3, then core bar key 11 is aimed at keyway 22, promote medicament and block until key A12 and keyway 22; Rotate core bar 1 key A12 and keyway 22 are aligned, promote core bar 1 again, make key A12 slip over keyway 22; Block until key B13 and keyway 22, medicament arrives the precalculated position.Rotate core bar 1 then, keyway 22 and key B13 are aligned, twitch needle stand 2 this moment; Block until protected key 14 and keyway 22; Rotate core bar 1 again, protected key 14 and keyway 22 are aligned, twitch needle stand 2 to core bar 1 top; Make in the lockhole 21 in the hook 15 insertion needle stands 2, this moment, core bar 1 locked with needle stand 2.

Embodiment 2:

Referring to Fig. 6, except that following difference, other are with embodiment 1.

This utility model needle tubing 3 outsides are provided with protective sleeve 4, and protective sleeve 4 is socketed on needle stand 2 ends.

Claims

1. a trocar comprises core bar (1), needle stand (2) and needle tubing (3); It is characterized in that, be provided with through hole (23) in the said needle stand (2), needle tubing (3) is fixedly connected with needle stand (2), and through hole (23) is communicated with needle tubing (3).

2. the trocar according to claim 1; It is characterized in that; Said needle stand (2) through hole (23) inwall is provided with keyway (22), and said core bar (1) is provided with the key that core bar key (11) and a plurality of and said keyway (22) are complementary, and core bar key (11) is in core bar (1) end.

3. the trocar according to claim 2 is characterized in that, the quantity of said key is 1～3.

4. the trocar according to claim 2 is characterized in that, said core bar (1) top is provided with the protected key (14) with keyway (22) coupling.

5. the trocar according to claim 1 is characterized in that, said core bar (1) top is provided with hook (15), and said needle stand (2) is provided with the lockhole (21) that is complementary with said hook (15)

6. the trocar according to claim 1 is characterized in that, said needle tubing (3) outside is provided with protective sleeve (4), and said protective sleeve (4) is socketed on needle stand (2) end.