CN102553023B - Trocar - Google Patents

Abstract

The invention relates to medical equipment, and in particular relates to a trocar for subcutaneous puncture and assist completion of medicament embodiment. The trocar comprises a core bar, a trocar base and a trocar tube, wherein the trocar base is internally provided with a through hole; the trocar tube is fixedly connected with the trocar base; and the through hole is communicated with the trocar tube; key slots are formed on the inner wall of the through hole of the trocar base; a core bar key and a plurality of keys matched with the key slots are arranged on the core bar; and the core bar key is arranged at the tail end of the core bar. The trocar has the beneficial effects that 1, the medicament is positioned and guided in a classifying way; 2, the keys can be protected to avoid misoperation, and the trocar can be self-locked and out of operation, so that the trocar can be protected; and 3, the trocar can be automatically self-locked to complete self-destruction after being used due to the arrangement of a pothook and a trocar base lock hole, so that the secondary use can be avoided, and the cross infection can be avoided.

Description

The trocar

Technical field

The present invention relates to a kind of medical apparatus and instruments, relate in particular to a kind of for subcutaneous puncture, the auxiliary embedding trocar of medicament of finishing.

Background technology

At present, clinically, subcutaneous puncture is widely used, 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 generally speaking is bad, and trocar repeated use, causes cross infection easily.

Summary of the invention

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

Technical scheme of the present invention is: a kind of trocar comprises core bar 1, needle stand 2 and needle tubing 3; Be provided with through hole 23 in the described needle stand 2, needle tubing 3 is fixedlyed connected with needle stand 2, and through hole 23 is communicated with needle tubing 3.

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

The quantity of described key is 1～3.The quantity of key requires to determine according to clinical practical operation.

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

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

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

Described 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.

Beneficial effect of the present invention 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, being arranged so that the trocar can lock voluntarily finishing self-destruction after finishing using of hook 15 and needle stand 2 lockholes 21 avoids secondary to use, and prevents cross infection.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is one of structural representation of core bar 1 among the present invention;

Fig. 3 be core bar 1 among the present invention structural representation two;

Fig. 4 is the structural representation of needle stand 2 among the present invention;

Fig. 5 is the phantom of A-A direction among Fig. 4 among the present invention;

Fig. 6 is the structural representation of embodiment 2 among the present invention.

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 the present invention below in conjunction with drawings and Examples.

Embodiment 1:

Referring to Fig. 1-Fig. 5, the present invention includes 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 fixedlyed 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 R13, 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 described hook 15.

Work process of the present invention is as follows: during use, with needle tubing 3 subcutaneous punctures to the precalculated position, earlier core bar 1 is pulled out, medicament is injected in the needle tubing 3, then core bar key 11 is aimed at keyway 22, promoting medicament blocks 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 R13 and keyway 22, medicament arrives the precalculated position.Rotate core bar 1 then; keyway 22 and key R13 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 following difference, other are with embodiment 1.

Needle tubing of the present invention 3 outsides are provided with protective sleeve 4, and protective sleeve 4 is socketed on needle stand 2 ends.

Claims (5)

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 described needle stand (2), needle tubing (3) is fixedlyed connected with needle stand (2), through hole (23) is communicated with needle tubing (3), the inwall of described through hole (23) is provided with keyway (22), and described core bar (1) is provided with the key that core bar key (11) and a plurality of and described keyway (22) are complementary, and the top of described core bar (1) is an end that contacts with described needle stand (2), end is the other end, and core bar key (11) is positioned at core bar (1) end.

2. the trocar according to claim 1 is characterized in that, the quantity of the key that described and keyway (22) is complementary is 1～3.

3. the trocar according to claim 1 is characterized in that, the described key that is complementary with keyway (22) comprises the protected key (14) on the top that is arranged on core bar (1).

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

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

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