CN211156145U

CN211156145U - Disposable operation trocar

Info

Publication number: CN211156145U
Application number: CN201921162686.9U
Authority: CN
Inventors: 陈文殊
Original assignee: Wenzhou Central Hospital
Current assignee: Wenzhou Central Hospital
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-08-04
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses a disposable operation trocar, including needle cover, spring, push rod and syringe needle, be provided with the syringe needle piston that can be at the inside side-to-side motion of needle cover in the needle cover, the fixed afterbody piston that is provided with of one end of push rod, the afterbody piston sets up at the afterbody of needle cover and can be at the inside side-to-side motion of needle cover, the one end that the afterbody piston was kept away from to the push rod is provided with the platykurtic and pushes away the handle, the fixed setting of one end of spring is on the afterbody piston, the other end is fixed to be set up on the syringe needle piston, the through-. A disposable operation trocar, when not using, the syringe needle is located the syringe needle, the syringe needle is clean more sanitary, promote during the operation in the vagina push away the handle can, avoided operating under the condition that can not look directly in the vagina, stab gloves, finger even, can extract 5ml at least medicine in the needle cover, when the cervical office sealed, can inject the medicine into office through the through-hole and seal the department.

Description

Disposable operation trocar

Technical Field

The utility model relates to the field of medical devices, in particular to a disposable operation trocar.

Background

When the artificial rupture of membranes or cervical seal in labor process, 8-gauge needles are usually used, gloves are generally worn, fingers clamp the needles to operate in the vagina, the gloves can be easily pierced by operating under invisible vision, even the fingers are pierced to cause injury and infection, when the cervical seal is needed, medicines are needed to be locally injected at the cervix, the existing liquid medicine treatment needs injection operation and cannot be combined with the rupture of membranes needles into a whole, and therefore a disposable operation trocar is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a disposable operation trocar possesses when not using that the syringe needle does not expose, reduces the damage, reduces the infection, can absorb advantages such as liquid medicine in the needle cover, can effectively solve the problem among the background art.

(II) technical scheme

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a disposable operation trocar, includes needle cover, spring, push rod and syringe needle, be provided with the syringe needle piston that can move about in the needle cover, the fixed afterbody piston that is provided with of one end of push rod, the afterbody piston sets up the afterbody of needle cover and can move about in the needle cover, the one end that the afterbody piston was kept away from to the push rod is provided with the platykurtic and pushes away the handle, the one end of spring is fixed to be set up on the afterbody piston, the other end is fixed to be set up on the syringe needle piston, the one end side central authorities that the afterbody piston was kept away from to the needle cover have seted up the through-hole, the syringe needle level sets up.

Further, the radius of the through hole is larger than the section radius of the needle head.

Further, when the tail piston is positioned at the leftmost end of the needle sleeve, the volume of a space in the needle sleeve positioned at the right side of the needle piston is at least 5ml, and scale marks are arranged on the surface of the needle sleeve at intervals of 0.5 cm.

(III) advantageous effects

Compared with the prior art, the utility model provides a disposable operation trocar possesses following beneficial effect:

1. this disposable operation trocar, when not using, the syringe needle is in the trocar, does not expose outside, can avoid impaling medical personnel's skin, and the syringe needle is in the environment that seals relatively, also cleaner health.

2. This disposable operation trocar when patient's intravaginal treatment operation, through promoting to push away the handle, push out the syringe needle through spring and syringe needle piston, will push away the handle and pull back after accomplishing, makes the syringe needle retract, whole treatment process syringe needle cover unidirectional motion, and is easy and simple to handle, has avoided operating in the vagina can't be under the direct-view puncture medical personnel gloves, finger even, and the security is better.

3. This disposable operation trocar, accessible through-hole inhales treatment liquid medicine to the needle cover in, when needing cervical office to seal, sends the needle cover to cervical office seal, can extrude cervical office seal through the through-hole with the treatment medicine in the needle cover, can play therapeutic effect.

Drawings

Fig. 1 is a perspective view of the whole structure of a disposable trocar of the present invention.

Figure 2 is a plan view of the overall structure of a disposable trocar of the present invention.

Fig. 3 is a plan view showing the connection relationship between the parts when the needle 6 is pushed out of the trocar for one-time operation according to the present invention.

Fig. 4 is a front view showing the positional relationship among the needle hub 1, the needle 6 and the through hole 9 of the disposable trocar of the present invention.

In the figure: 1. a needle sleeve; 2. a tail piston; 3. a needle piston; 4. a spring; 5. a push rod; 6. a needle head; 7. scale marks; 8. a push handle; 9. and a through hole.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-4, a disposable operation trocar comprises a needle sheath 1, a spring 4, a push rod 5 and a needle 6, wherein the needle sheath 1 is provided with a needle piston 3 capable of moving left and right inside the needle sheath 1, one end of the push rod 5 is fixedly provided with a tail piston 2, the push rod 5 can drive the tail piston 2 to move, the tail piston 2 is arranged at the tail of the needle sheath 1 and can move left and right inside the needle sheath 1, one end of the push rod 5 far away from the tail piston 2 is provided with a flat push handle 8, which is convenient for the thumb to press the push handle 8 and push the push rod 5, one end of the spring 4 is fixedly arranged on the tail piston 2, the other end is fixedly arranged on the needle piston 3, when the tail piston 2 moves left and right, the needle piston 3 can be driven to move left and right by the spring 4, the center of the side surface of one end of the needle sheath 1 far, the needle 6 is horizontally arranged in the center of the interior of the needle sleeve 1, one end of the needle is fixedly arranged on the needle piston 3, and the other end of the needle is aligned with the through hole 9.

The radius of the through hole 9 is larger than the section radius of the needle 6, the needle 6 can freely enter and exit in the through hole 9, and meanwhile, the liquid medicine can freely enter and exit through the through hole 9.

When tail piston 2 was located needle cover 1 leftmost end, the space volume that lies in needle head piston 3 right in needle cover 1 was 5ml, and its surface uses 0.5cm to be provided with scale mark 7 as the interval, when needle head piston 3 stretches out through-hole 9 right, can observe scale mark 7, control syringe needle 6 extension length.

The working principle is as follows: when artificial rupture of membranes or cervical local sealing is needed, fingers can clamp the needle sleeve 1 to enter a vagina to push the push handle 8, the push handle 8 drives the push rod 5, the push rod 5 pushes the tail piston 2, the tail piston 2 pushes the spring 4, the spring 4 pushes the needle piston 3, the needle piston 3 drives the needle 6 to extend out of the through hole 9, an affected part can be punctured, the scale mark 7 can record the extending length of the needle 6, after puncturing is completed, the push handle 8 is pulled backwards, the push handle 8 drives the push rod 5, the push rod 5 drives the tail piston 2, the tail piston 2 drives the spring 4, the spring 4 drives the needle piston 3, the needle piston 3 drives the needle 6 to retract into the needle sleeve 1 from the through hole 9, the situation that the gloves and even fingers of medical staff cannot be seen directly under operation in the vagina is avoided, when the cervical local sealing is needed, liquid medicine can be sucked into the needle sleeve 1 through the through hole 9, and then the, the push handle 8 is extruded, and finally the needle piston 3 pushes the liquid medicine in the needle sleeve 1 to be extruded out from the through hole 9 to reach the cervical local sealing part, thereby achieving the treatment effect.

It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A disposable operation trocar, includes needle cover (1), spring (4), push rod (5) and syringe needle (6), its characterized in that: the needle sleeve is characterized in that a needle piston (3) capable of moving left and right inside the needle sleeve (1) is arranged in the needle sleeve (1), a tail piston (2) is fixedly arranged at one end of a push rod (5), the tail piston (2) is arranged at the tail of the needle sleeve (1) and can move left and right inside the needle sleeve (1), a flat push handle (8) is arranged at one end, far away from the tail piston (2), of the push rod (5), one end of a spring (4) is fixedly arranged on the tail piston (2), the other end of the spring is fixedly arranged on the needle piston (3), a through hole (9) is formed in the center of the side face of one end, far away from the tail piston (2), of the needle sleeve (1), the needle (6) is horizontally arranged in the center inside of the needle sleeve (1), one end of the needle piston is fixedly arranged on the needle piston (3.

2. A single use trocar as claimed in claim 1, wherein: the radius of the through hole (9) is larger than the section radius of the needle head (6).

3. A single use trocar as claimed in claim 1, wherein: when the tail piston (2) is positioned at the leftmost end of the needle sleeve (1), the volume of the space on the right side of the needle piston (3) in the needle sleeve (1) is at least 5ml, and the surface of the needle sleeve is provided with scale marks (7) at intervals of 0.5 cm.