Disposable waste liquid suction type laparoscope puncture outfit
By incorporating a stepped surface and a collection valve into the laparoscopic trocar, the problem of fluid backflow through the gauze was solved, enabling safe and efficient fluid drainage and improving the success rate and safety of the surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-03-24
AI Technical Summary
During surgery, existing laparoscopic trocars can easily cause fluid on the gauze to be squeezed back into the patient's body, increasing postoperative recovery time and infection risk, especially for patients with malignant tumors who may have intraperitoneal implantation and metastasis. Furthermore, existing solutions are time-consuming and labor-intensive, increasing medical costs.
A disposable laparoscopic trocar for aspirating waste fluid is designed. By setting straight tube sections and variable diameter sections of different diameters on the trocar sheath to form a stepped surface, the fluid squeezed out by the sealing valve is collected and discharged from the body using a collection valve to avoid backflow.
It effectively prevents fluid backflow, reduces surgical risks, improves surgical success rates, saves surgical time and resources, and reduces the risk of infection.
Smart Images
Figure CN224023642U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical equipment technical field, especially in a kind of disposable suction waste liquid type laparoscope puncture outfit. BACKGROUND
[0002] Laparoscope puncture outfit is applicable to various minimally invasive surgical operation, enters abdominal cavity through single incision, as the passageway of instrument or camera to implement minimally invasive surgery.Laparoscope puncture outfit as the key channel of in-out body cavity, its function is directly related to the smooth progress of operation and the safety of patient.The existing laparoscope puncture outfit usually includes puncture core, puncture sleeve, air inlet valve, air blocking valve, sealing cap and the like part.Sealing cap is equipped with sealing valve, and valve is continuously closed when instrument passes through sealing cap and enters or exits puncture sleeve, to prevent body cavity gas from leaking to ensure sealing condition.During operation process, doctor will use forceps to hold the used gauze strip with blood and tissue fluid, and it is transferred out of abdominal cavity through sealing valve.But when gauze strip passes through sealing valve, part of discarded blood or tissue fluid is often squeezed back to patient body in reverse direction due to the extrusion of valve, thereby causing secondary pollution.This not only can increase the probability of slow postoperative recovery of patient, but also can increase the risk of infection.For malignant tumor patients, tumor cells can be contained in blood or tissue fluid, and this condition can also increase the possibility of implantation and metastasis in abdominal cavity and puncture passageway.Furthermore, some scholars propose that abdominal cavity flushing liquid is used to completely wash gauze before it is taken out of body cavity, and the liquid in gauze strip is completely sucked out of body cavity by pressing and sucking simultaneously.But this method has many problems.The first is that it can consume a lot of operation time, and with the extension of operation time, anesthesia risk of patient can also increase.The second is that a lot of manpower and material resources are wasted, and medical cost is increased. SUMMARY
[0003] The utility model solves the technical problem that: provide a kind of disposable suction waste liquid type laparoscope puncture outfit, the liquid on gauze that is extruded by valve is collected in liquid collection area, and then the liquid in liquid collection area is sucked out of body by liquid collection valve, to solve the problem of blood reflux.
[0004] To solve the above technical problem, the technical scheme adopted by the utility model is as follows:
[0005] A kind of disposable suction waste liquid type laparoscope puncture outfit, including puncture sheath, sealing valve and fixed cover, the top of the puncture sheath is equipped with the sealing valve, the sealing valve is fixed on the puncture sheath by the fixed cover located above it, further including liquid collection valve, the puncture sheath sequentially includes straight pipe section and variable diameter section and connecting section from bottom to top;
[0006] The diameter of the variable-diameter section is larger than the diameter of the straight pipe section, and a step surface is formed at the connection between the straight pipe section and the variable-diameter section, a valve mounting hole is formed in the side wall of the variable-diameter section, the valve mounting hole is opposite to the step surface, and the liquid collecting valve is mounted at the valve mounting hole.
[0007] The sealing valve and the fixing cover are fixed at the connection section of the puncture sheath.
[0008] Further, the step surface is perpendicular to the axis of the straight pipe section.
[0009] Further, when the axis of the straight pipe section is in a vertical state, the outer edge of the step surface is lower than the inner edge.
[0010] Further, the inner edge of the step surface is 1 / 4 to 1 circumferential line.
[0011] Further, the inner edge of the step surface is 1 / 2 circumferential line.
[0012] Further, the outer edge of the step surface is a U-shaped line, a circular arc line, a circumferential line, a parabolic line or a V-shaped line.
[0013] Further, the variable-diameter section is the same in shape from top to bottom.
[0014] Further, the variable-diameter section is gradually increased in shape from top to bottom within the range of the step surface.
[0015] Further, the bottom surface of the valve mounting hole is flush with the step surface, or when the axis of the straight pipe section is in a vertical state, the bottom surface of the valve mounting hole is lower than the step surface.
[0016] Further, the outer side of the valve mounting hole integrally extends a convex circular pipe, and the liquid collecting valve is mounted in the convex circular pipe.
[0017] The beneficial effects of the utility model lie in that the straight pipe section and the variable-diameter section with different diameters are arranged on the puncture sheath, so that a step surface for collecting liquid is formed between the straight pipe section and the variable-diameter section, the step surface is a liquid collecting area, the liquid on the gauze squeezed by the valve is collected in the liquid collecting area, the liquid in the liquid collecting area is led out of the body through the valve mounting hole and the liquid collecting valve, the problem of blood reflux is solved, the risk caused by the reflux of waste liquid in surgery is reduced, and the success rate of surgery is improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 It is a perspective view of the disposable suction waste liquid type laparoscopic puncture device according to the utility model;
[0019] Fig. 2The utility model discloses a sectional view of disposable suction waste liquid type laparoscope puncture ware.
[0020] Label explanation:
[0021] 1, puncture sheath pipe, 2, sealing valve, 3, fixed cover, 4, liquid collecting valve, 5, inlet valve,
[0022] 11, straight pipe section, 12, reducing section, 13, connecting section, 14, step surface, 15, valve mounting hole, 16, convex round pipe. Specific embodiment
[0023] To explain the technical content of the utility model, the purpose and effect realized, the following will be explained in combination with the embodiment and the drawings.
[0024] Please refer to Figs. 1-2 The utility model provides an embodiment:
[0025] A disposable suction waste liquid type laparoscope puncture ware, including puncture sheath pipe 1, sealing valve 2 and fixed cover 3, the top of puncture sheath pipe 1 is installed sealing valve 2, sealing valve 2 is fixed on puncture sheath pipe 1 through fixed cover 3 located above it, sealing valve 2 plays the role of isolating abdominal cavity from outside during operation, and various medical instruments, utensils pass through the inner hole of puncture sheath pipe 1 to enter and exit human abdominal cavity.
[0026] During operation, when wet gauze is pulled outwards through the inner hole of puncture sheath pipe 1, sealing valve 2 will extrude wet gauze, in order to prevent the waste liquid on wet gauze from flowing back to human abdominal cavity again, specifically, the puncture sheath pipe 1 is designed to include straight pipe section 11 and reducing section 12 and connecting section 13 from bottom to top in turn, wherein the straight pipe section 11 is round pipe, and the end portion thereof that extends into abdominal cavity is provided with an inclined cutout, facilitating its entering into human body; The diameter of reducing section 12 is greater than the diameter of straight pipe section 11, and a step surface 14 is formed at the connecting position of straight pipe section 11 and reducing section 12, the puncture ware is placed obliquely, and when wet gauze is pulled outwards from puncture sheath pipe 1, the liquid extruded by sealing valve 2 will drop on step surface 14 and be collected, and will not drop into human abdominal cavity.
[0027] In order to discharge the liquid collected on the step surface 14, a liquid collecting valve 4 is further provided. A valve mounting hole 15 is formed on the side wall of the variable diameter section 12, which is opposite to the step surface 14 and connected to the step surface 14. The liquid collected on the step surface 14 can flow into the valve mounting hole 15, and the liquid collecting valve 4 is mounted on the valve mounting hole 15. Since the liquid collecting valve 4 is mounted on the outside of the puncture sheath 1 and opposite to the step surface 14, when the waste liquid on the wet gauze is collected, the puncture sheath 1 is tilted to the angle that the step surface 14 is below. Preferably, the puncture sheath 1 is tilted to the state that the liquid collecting valve 4 is at the lower position. Under the action of gravity, when the liquid collecting valve 4 is closed, the liquid collected on the step surface 14 enters the inlet end of the liquid collecting valve 4 but cannot flow out. When the liquid collecting valve 4 is opened, the waste liquid can flow out of the liquid collecting valve 4.
[0028] Preferably, in order to prevent the liquid flowing out of the liquid collecting valve 4 from splashing, an external suction device is further provided to communicate with the liquid collecting valve 4. Under the suction action of the external suction device, the waste liquid can be collected without splashing, so that the harm of the waste liquid to the patient or the medical staff is prevented, and the safety of the operation is improved.
[0029] Further, the sealing valve 2 and the fixing cover 3 are fixed on the connecting section 13 of the puncture sheath 1 and located at the top position of the puncture sheath 1.
[0030] In view of the tilting of the step surface 14, specifically, the step surface 14 is perpendicular to the axis of the straight pipe section 11, or when the axis of the straight pipe section 11 is in the vertical state, the outer edge of the step surface 14 is lower than the inner edge, so that the step surface 14 and the inner side wall of the variable diameter section 12 can form a recess, which has the ability to collect liquid.
[0031] In view of the shape of the connecting edge of the step surface 14 and the straight pipe section 11, specifically, the inner edge of the step surface 14 is 1 / 4~1 circumferential line, that is, the connecting edge of the step surface 14 and the straight pipe section 11 is at least 1 / 4 of the size of the circular arc line of the inner hole of the straight pipe section 11, so that the step surface 14 has a certain liquid collecting ability. Preferably, the inner edge of the step surface 14 is 1 / 2 circumferential line, which not only has good liquid collecting ability, but also is convenient for processing and has an attractive appearance of the variable diameter section 12.
[0032] For example, as shown in Fig. 1 and Fig. 2 , specifically, the inner edge of the step surface 14 is 1 / 2 circumferential line, and the half of the straight pipe section 11 cut longitudinally has the same shape and size as the side wall of the variable diameter section 12, and the other half is smaller than the circular arc radius of the side wall of the variable diameter section 12. A step surface 14 is formed between the variable diameter section 12 and the straight pipe section 11 at the other half, and the outer edge of the step surface 14 is in the shape of a parabola, so that the shape of the step surface 14 is a crescent.
[0033] The shape of the step surface 14 and the connecting edge of the inner hole of the variable diameter section 12 is specifically a U-shaped line, a circular arc line, a circular line, a parabolic line or a V-shaped line. If the outer edge of the step surface 14 is a U-shaped line, a circular arc line, a parabolic line or a V-shaped line, the valve mounting hole 15 is located in the middle of the step surface 14. If the inner edge of the step surface 14 is circular and the outer edge is a circular line, that is, circular, the valve mounting hole 15 is located on the side surface of the step surface 14 at any position. During surgery, the puncture sheath 1 is inclined to an angle at which the liquid collecting valve 4 is lower than the step surface 14.
[0034] The shape structure of the variable diameter section 12 in the longitudinal direction is specifically that the variable diameter section 12 has the same shape from top to bottom, which has the characteristics of beautiful appearance and easy processing. Alternatively, the variable diameter section 12 has a gradually increasing trend from top to bottom in the range of the step surface 14, so that the step surface 14 and the inner side wall of the variable diameter section 12 form a concave for collecting liquid.
[0035] The connecting structure between the valve mounting hole 15 and the step surface 14 is specifically that the bottom surface of the valve mounting hole 15 is flush with the step surface 14, which is convenient for complete collection of liquid. Alternatively, when the axis of the straight pipe section 11 is in a vertical state, the bottom surface of the valve mounting hole 15 is lower than the step surface 14, which is more conducive to the collection of liquid.
[0036] The connecting structure between the valve mounting hole 15 and the liquid collecting valve 4 is specifically that the outer side of the valve mounting hole 15 integrally extends a protruding round pipe 16, which is in the shape of a round pipe, and the inlet end of the liquid collecting valve 4 is installed in the protruding round pipe 16.
[0037] The sealing valve 2 can be one or two. If there are two sealing valves 2, they are arranged above and below, and the conical angle of the upper sealing valve 2 is greater than that of the lower sealing valve 2.
[0038] In order to facilitate gas injection into the human body, further including an air inlet valve 5, the air inlet valve 5 is installed on the side wall of the puncture sheath 1, specifically by referring to the structure of the liquid collecting valve 4 installed on the puncture sheath 1, and the installation height of the air inlet valve 5 is higher than that of the liquid collecting valve. During surgery, the straight pipe section 11 of the puncture sheath 1 is mostly inserted into the abdominal cavity of the human body, and the variable diameter section 12 and the connecting section 13 are located outside the human body.
[0039] In order to improve the friction and stability between the puncture device and the surgical incision of the human body, the outer side wall of the straight pipe section 11 is processed into a corrugated pipe shape.
[0040] The disposable suction waste liquid type laparoscope puncture device has the advantages that:
[0041] 1. The variable diameter section 12 is provided with a part of circular arc with a diameter larger than that of the straight pipe section 11 or a whole circle with a diameter larger than that of the straight pipe section 11, so that a step surface 14 is formed between the variable diameter section 12 and the straight pipe section 11; when the puncture device is inclined to the step surface 14 in a low position state, a concave for collecting liquid is formed between the step surface 14 and the inner wall of the variable diameter section 12, so that the liquid squeezed out by the wet gauze from the sealing valve 2 is collected on the step surface 14, the backflow of the liquid to the human body is prevented, and the success rate of the operation is improved;
[0042] 2. The valve mounting hole 15 and the liquid collecting valve 4 are arranged in butt joint with the step surface 14, so that the waste liquid collected on the step surface 14 is conveniently discharged; if the waste liquid is discharged by suction, splashing of the waste liquid is avoided, the success rate of the operation is improved, and the patient and the medical staff are prevented from being unnecessarily infected.
[0043] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent transformation or direct or indirect application in the related technical field by using the content of the present application is also included in the patent protection range of the present application.
Claims
1. A disposable laparoscopic trocar for aspirating waste fluid, comprising a trocar sheath (1), a sealing valve (2), and a fixing cap (3), wherein the sealing valve (2) is mounted on the top of the trocar sheath (1), and the sealing valve (2) is fixed to the trocar sheath (1) by the fixing cap (3) located above it, characterized in that, It also includes a liquid collection valve (4), and the puncture sheath (1) includes a straight pipe section (11), a variable diameter section (12), and a connecting section (13) from bottom to top. The diameter of the variable diameter section (12) is larger than the diameter of the straight pipe section (11), and a stepped surface (14) is formed at the connection between the straight pipe section (11) and the variable diameter section (12). A valve mounting hole (15) is provided on the side wall of the variable diameter section (12). The valve mounting hole (15) is opposite to the stepped surface (14), and the liquid collecting valve (4) is installed at the valve mounting hole (15). The sealing valve (2) and the fixing cap (3) are fixed at the connecting section (13) of the puncture sheath (1).
2. The disposable waste fluid aspiration type laparoscopic trocar according to claim 1, characterized in that, The stepped surface (14) is perpendicular to the axis of the straight pipe section (11).
3. The disposable waste fluid aspiration type laparoscopic trocar according to claim 1, characterized in that, When the axis of the straight pipe section (11) is in a vertical state, the outer edge of the stepped surface (14) is lower than the inner edge.
4. The disposable waste fluid aspiration type laparoscopic trocar according to claim 1, characterized in that, The inner edge of the stepped surface (14) is a 1 / 4 to 1 circumference line.
5. The disposable waste fluid aspiration type laparoscopic trocar according to claim 4, characterized in that, The inner edge of the stepped surface (14) is a 1 / 2 circumference line.
6. The disposable waste fluid aspiration type laparoscopic trocar according to claim 1 or 4, characterized in that, The outer edge of the stepped surface (14) is a U-shaped line, an arc, a circle, a parabola, or a V-shaped line.
7. The disposable waste fluid aspiration type laparoscopic trocar according to claim 4, characterized in that, The variable diameter section (12) has the same shape from top to bottom.
8. The disposable waste fluid aspiration type laparoscopic trocar according to claim 4, characterized in that, Within the area of the stepped surface (14), the variable diameter section (12) gradually increases in size from top to bottom.
9. The disposable waste fluid aspiration type laparoscopic trocar according to claim 1, characterized in that, The bottom surface of the valve mounting hole (15) is flush with the step surface (14), or when the axis of the straight pipe section (11) is in a vertical state, the bottom surface of the valve mounting hole (15) is lower than the step surface (14).
10. The disposable waste fluid aspiration type laparoscopic trocar according to claim 9, characterized in that, A raised circular tube (16) extends integrally from the outside of the valve mounting hole (15), and the liquid collecting valve (4) is installed inside the raised circular tube (16).