CN215690619U - Injection device for laparoscopic surgery - Google Patents

Abstract

The utility model discloses an injection device for laparoscopic surgery, which comprises an injector body and a needle head, wherein the injector body comprises a needle cylinder and a piston movably inserted in the needle cylinder, the needle head can be inserted on the needle cylinder, the injector also comprises an injection cylinder, one end of the needle cylinder, which is positioned at the needle head, is movably inserted in the injection cylinder, the operating end of the piston extends out of the injection cylinder, a telescopic cylinder is movably sleeved on the end, which is positioned at the extending end of the piston, of the injection cylinder, and the telescopic cylinder can clamp the outer wall of the needle cylinder. The injection device of the utility model utilizes the injection tube to limit the needle cylinder, utilizes the telescopic cylinder to adjust the injection depth of the needle cylinder, and medical personnel can control the injection depth of the needle cylinder only by controlling the telescopic amount of the telescopic cylinder relative to the injection tube, thereby improving the accuracy of operation and avoiding over-puncture during injection. Meanwhile, when the injection depth is adjusted, only the telescopic cylinder needs to be pushed, so that a doctor can better hold the injector body, and the use convenience is improved.

Description

Injection device for laparoscopic surgery

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an injection device for laparoscopic surgery.

Background

Green indocyanine, ICG for short, is a medical fluorescent material used in medicine as an indicator, which is widely used by medical students. At present, in the process of treating gastric cancer, doctors usually inject ICG into gastric submucosa after sequentially penetrating through stomachs and stomachs, epicardium and muscular layers of patients through an injector under the guidance of ultrasound so as to achieve the effect of displaying lymph nodes and conveniently diagnose the condition in the stomach. In the existing clinical treatment, because the gastric cancer treatment usually needs to be assisted by a laparoscope for operation, for the purpose of ensuring the positioning of surgical equipment and protecting wounds, medical staff generally open a plurality of wounds on the belly of a patient, then fix a sleeve on the wounds, enter various equipment into the body of the patient through the sleeve, and the indole green is also injected into the stomach of the patient through the sleeve.

At present, the ICG injection work is basically finished through an injector, the operation is carried out under the guidance of ultrasound, and the injector is inserted into the stomach of a patient through a cannula, so the injection depth of a doctor is difficult to control, the injection accuracy completely depends on the experience and the manipulation of the doctor, the misoperation is easy to occur, the needle head of the injector excessively pierces the gastric submucosa, the injection is not in place, the display effect is poor, and the later treatment is influenced.

Disclosure of Invention

The present invention has been made to solve at least one of the above-mentioned problems, and an object of the present invention is to provide an injection device for laparoscopic surgery, which has a simple structure, facilitates control of an injection depth, and improves injection accuracy.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides an injection apparatus that laparoscopic surgery used, includes syringe body and syringe needle, the syringe body includes cylinder and the piston of activity cartridge in the cylinder, the syringe needle can the cartridge on the cylinder, still includes the injection tube, the cylinder is located the one end activity cartridge of syringe needle and is in the injection tube, the operation end of piston stretches out the injection tube, the injection tube is located the last movable sleeve that the piston stretches out one end is equipped with the telescopic cylinder, the outer wall of telescopic cylinder can the chucking cylinder.

Furthermore, a limiting ring is adjustably arranged on the outer wall of the telescopic cylinder, and the limiting ring can be abutted against the end face of the injection cylinder, which is located at the extending end of the piston.

Furthermore, the outer wall of the limiting ring is provided with anti-skid lines.

Furthermore, a cone cylinder is arranged at one end, far away from the telescopic cylinder, of the injection cylinder, and the needle head can penetrate out of the cone cylinder.

Furthermore, a transparent area is arranged on the outer wall of the telescopic cylinder, and scale marks are arranged on the transparent area.

Furthermore, the outside one of telescopic cylinder is served and is provided with the card portion of holding, be provided with the fixture block that can deform in the card portion of holding, be provided with the bayonet socket on the fixture block, the outer wall of cylinder can be held in the bayonet socket by the card.

Further, the syringe needle is including the needle file, needle tubing and the spherical syringe needle body that set gradually, be provided with the side opening of intercommunication needle tubing on the lateral wall of the spherical syringe needle body, the needle file cartridge is at the output of cylinder.

Furthermore, a push-pull part is arranged on the outer wall of one end of the telescopic cylinder, which is far away from the injection cylinder.

The utility model has the beneficial effects that:

the injection device of the utility model utilizes the injection tube to limit the needle cylinder, utilizes the telescopic cylinder to adjust the injection depth of the needle cylinder, and medical personnel can control the injection depth of the needle cylinder only by controlling the telescopic amount of the telescopic cylinder relative to the injection tube, thereby improving the accuracy of operation and avoiding over-puncture during injection. Meanwhile, when the injection depth is adjusted, only the telescopic cylinder needs to be pushed, so that a doctor can better hold the injector body, and the use convenience is improved.

Drawings

The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings, in which:

FIG. 1 is a first schematic structural diagram according to an embodiment of the present invention;

FIG. 2 is a second schematic structural diagram according to an embodiment of the present invention;

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

fig. 4 is a schematic structural view of a needle head in an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or there can be intervening components, and when a component is referred to as being "disposed in the middle," it is not just disposed in the middle, so long as it is not disposed at both ends, but rather is within the scope of the middle. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, the present application provides an injection device for laparoscopic surgery, including injector body 10 and syringe needle 20, injector body 10 includes syringe 12 and movable cartridge piston 11 in syringe 12, syringe needle 20 can cartridge on syringe 12, still includes injection tube 30, syringe 12 is located the movable cartridge of one end of syringe needle 20 and is in injection tube 30, injection tube 30 is stretched out to the operating end of piston 11, injection tube 30 is located the last movable sleeve that piston 11 stretched out one end is equipped with telescopic tube 40, telescopic tube 40 can the outer wall of chucking syringe 12. It should be noted that the syringe 12 is coaxially disposed in the telescopic tube 40, which facilitates the active alignment of the syringe 12 and improves the accuracy of injection.

The injection tube 30 is shorter than the telescopic tube 40, and is mainly used for fixing and positioning the needle cylinder 12 to avoid shaking when the whole injector body 10 is pushed, so that other fixing or limiting structures can be designed in the injection tube 30 to play a positioning role. In one embodiment of the present application, the end of the syringe barrel 30 remote from the telescopic barrel 40 is provided with a cone barrel 31, and the needle 20 can penetrate out of the cone barrel 31. By utilizing the self-positioning characteristic of the cone barrel 31, the needle cylinder 12 can be positioned stably when being pierced into the body of a patient, and shaking caused by bare-handed puncture is avoided. Wherein, the design of the cone 31 can be adapted to the syringe bodies 10 with different specifications and sizes. In order to better adapt to the injection depth, the small end of the cone 31 is also designed and sleeved with a fixed cylinder with different inner diameters, so as to be convenient for adapting to syringes 12 with different specifications.

Further, in order to control the depth of the syringe 12, i.e. the amount of extension and retraction of the telescopic tube 40 relative to the syringe barrel 30, in a modified embodiment of the present application, a position-adjustable limiting ring 50 is disposed on the outer wall of the telescopic tube 40, and the limiting ring 50 can abut against the end surface of the syringe barrel 30 at the end where the piston 11 extends. Wherein the relative telescopic amount of the telescopic cylinder 40 and the syringe 30 can be adjusted by adjusting the position of the limiting ring 50 on the telescopic cylinder 40. In the actual injection process, the doctor can first determine the distance between the stomach of the patient and the skin of the patient from a B-ultrasonic, laparoscopic or other device, then select the needle 20 with a suitable length, adjust the position of the stop collar 50 on the telescopic cylinder 40 so that the needle 20 and the needle cylinder 12 can be relatively retracted relative to the injection cylinder 30 together with the telescopic cylinder 40 by the same amount as the distance between the stomach of the patient and the skin of the patient, at this time, the doctor can push the telescopic cylinder 40 and the injector body 10 together to retract relative to the injection cylinder 30, and at this time, the injector body 10 is gradually inserted into the patient, or inserted into the patient through the cannula of the laparoscopic. Due to the limitation of the limiting ring 50, the shrinkage of the telescopic cylinder 40 relative to the injection tube 30 is limited, so that a doctor can quickly and often push the telescopic cylinder 40 to frequently puncture and inject, the problem of over puncture is not worried about in one step, and the injection accuracy is improved. In actual use, the distance between the stomach of the patient and the skin of the patient changes along with the respiration of the patient, so that a doctor can finely adjust the position of the limiting ring 50 on the telescopic cylinder 40 according to the actual respiration condition of the patient, and the doctor assists the ultrasonic technology to perform fine puncture, thereby improving the injection precision.

In order to realize that the position of the limiting ring 50 on the telescopic cylinder 40 can be adjusted at will, the limiting ring 50 is connected with the telescopic cylinder 40 through threads, so that stepless adjustment of the limiting ring 50 on the telescopic cylinder 40 can be realized only by rotating the limiting ring 50 in actual operation. Of course, in some embodiments, the inner wall of the stop collar 50 and the outer wall of the telescopic tube 40 may be locked by friction. The outer wall of the limit ring 50 is provided with anti-slip lines, so that a doctor can conveniently hold the limit ring 50 to adjust the position of the limit ring on the telescopic cylinder 40.

In a modified embodiment, a transparent area 41 is arranged on the outer wall of the telescopic cylinder 40, and a scale mark 42 is arranged on the transparent area 41, so that a doctor can conveniently adjust the relative telescopic amount of the telescopic cylinder 40 and the syringe 30, and the accuracy is improved.

Referring to fig. 1 to 3, in order to better clamp the needle cylinder 12, so that the needle cylinder 12 moves along with the telescopic cylinder 40, a clamping portion 43 is disposed at an outward end of the telescopic cylinder 40, a deformable latch 44 is disposed on the clamping portion 43, a bayonet 45 is disposed on the latch 44, and an outer wall of the needle cylinder 12 can be clamped in the bayonet 45. The clamping block 44 can be replaced, and therefore the clamping block 44 can be mounted on the clamping part 43 in a clamping manner, so that later-stage replacement is facilitated. It should be noted that, after the bayonet 45 is used to clamp the syringe 12, the syringe 12 and the telescopic tube 40 are in a coaxial arrangement, so as to ensure the accuracy in the later injection. In a modified embodiment, since the doctor needs to hold the telescopic cylinder 40 to push the whole injector body 10 for puncturing injection, a push-pull portion is disposed on the outer wall of the end of the telescopic cylinder 40 far away from the syringe barrel 30, and the design of the push-pull portion is convenient for the doctor to push the telescopic cylinder 40 for puncturing and to push the piston 11 for injection later.

Referring further to fig. 4, an embodiment of a needle 20 is provided for this purpose, as the needle tip of a conventional needle 20 is relatively sharp, and the exit opening at the needle tip is spaced from the tip of the needle tip, which is susceptible to piercing the stomach wall. Wherein, syringe needle 20 is including the needle file 21, needle 22 and the spherical needle head body 23 that set gradually, be provided with the side hole 24 of intercommunication needle 22 on the lateral wall of spherical needle head body 23, the output at cylinder 12 of needle file 21 cartridge. The spherical needle point structure is adopted, so that the function of puncture is kept, and the needle point can be prevented from being punctured excessively. Even in some embodiments, needle 20 may be of the inside-outside needle configuration of a conventional introducer needle, wherein the inside needle of the introducer needle is of a ball-nose design and the outside needle is of the same configuration as the conventional needle, thus facilitating passage of the entire needle 20 through the patient's belly and stomach wall.

The injection device of the utility model utilizes the injection tube 30 to limit the syringe 12, utilizes the telescopic tube 40 to adjust the injection depth of the syringe 12, and medical personnel can control the injection depth of the syringe 12 only by controlling the telescopic amount of the telescopic tube 40 relative to the injection tube 30, thereby improving the accuracy of operation and avoiding over-puncture during injection. Meanwhile, when the injection depth is adjusted, only the telescopic cylinder 40 needs to be pushed, so that a doctor can better hold the injector body 10, and the use convenience is improved.

The above embodiments are only for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement without departing from the spirit and scope of the present invention should be covered within the technical solutions of the present invention.

Claims (8)

1. The utility model provides an injection apparatus that laparoscopic surgery used, includes syringe body and syringe needle, the syringe body includes cylinder and the piston of activity cartridge in the cylinder, the syringe needle can the cartridge on the cylinder, its characterized in that still includes the injection tube, the cylinder is located the one end activity cartridge of syringe needle and is in the injection tube, the operation end of piston stretches out the injection tube, the injection tube is located the last movable sleeve that the piston stretches out one end is equipped with the telescopic cylinder, the outer wall of telescopic cylinder can the chucking cylinder.

2. The device as claimed in claim 1, wherein a position-adjustable stop ring is disposed on an outer wall of the telescopic cylinder, and the stop ring can abut against an end surface of the syringe at the protruding end of the piston.

3. The injection apparatus for laparoscopic surgery of claim 2, wherein the outer wall of said stop collar is provided with anti-slip lines.

4. The device as claimed in claim 1, wherein the syringe barrel is provided with a cone at an end thereof remote from the telescopic barrel, and the needle is capable of passing through the cone.

5. The injection apparatus for laparoscopic surgery of claim 1, wherein a transparent region is formed on an outer wall of said telescopic cylinder, and said transparent region is provided with scale marks.

6. The injection device for laparoscopic surgery as claimed in any one of claims 1 to 5, wherein a retaining portion is formed on an outward end of said telescopic cylinder, a deformable clamping block is formed on said retaining portion, a bayonet is formed on said clamping block, and an outer wall of said needle cylinder is capable of being retained in said bayonet.

7. The injection device for laparoscopic surgery according to any one of claims 1 to 5, wherein the needle comprises a needle seat, a needle tube and a spherical needle head body, which are arranged in sequence, a side hole communicated with the needle tube is arranged on the side wall of the spherical needle head body, and the needle seat is inserted into the output end of the needle tube.

8. The device as claimed in any one of claims 1 to 5, wherein a push-pull portion is provided on an outer wall of an end of the telescopic cylinder remote from the syringe barrel.

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