CN221671793U - A continuously injectable breast surgery tissue hydraulic separator - Google Patents

Abstract

The utility model discloses a breast surgery tissue hydraulic separator capable of continuous injection, comprising a syringe, a piston rod and a needle; one end of the syringe is open, and the other end is provided with a first joint; one end of the piston rod is provided with a piston adapted to the syringe, and the other end of the piston rod passes through the open end, a fluid replenishment channel extending to the inner end of the piston is provided in the piston rod, a second joint connected to an infusion hose is provided at the outer end of the fluid replenishment channel, and a liquid inlet one-way valve is connected to the inner end of the fluid replenishment channel; the needle is connected to the first joint through a liquid outlet one-way valve, a hollow separation sheet is provided at the end of the needle, and a plurality of liquid outlet holes are provided outside the separation sheet. The utility model solves the problem that the existing hydraulic separator cannot continuously inject swelling fluid during the process of separating breast tissue.

Description

A continuously injectable breast surgery tissue hydraulic separator

Technical Field

The utility model relates to the technical field of breast surgery instruments, in particular to a breast surgery tissue hydraulic separator capable of continuous injection.

Background Art

During breast surgery, a small incision is made in the armpit, and then a separator is inserted into the chest through the small incision to separate the tissues, and finally the prosthesis is placed between the separated tissues. In the process of separating the chest tissues, a hydraulic separator can be used. The hydraulic separator uses a syringe to inject swelling fluid into the chest tissue to achieve tissue separation. After the syringe of the existing hydraulic separator is injected once, the needle needs to be separated from the syringe. After the syringe is replenished with swelling fluid, it is connected to the needle for a second injection. During the docking process between the syringe and the needle, the needle will shake, and the needle inserted into the human body will damage the human tissue again, causing secondary damage. In addition, during this process, due to the separation of the syringe, the swelling fluid that has been injected into the human body will be discharged from the needle in reverse flow, which increases the difficulty of the operation and is extremely inconvenient to operate.

Utility Model Content

In view of the defects in the prior art, the utility model provides a breast surgery tissue hydraulic separator capable of continuous injection, so as to solve the problem that the existing hydraulic separator cannot continuously inject swelling fluid during the process of separating breast tissue.

The utility model provides a breast surgery tissue hydraulic separator capable of continuous injection, comprising a syringe, a piston rod and a needle;

One end of the injection barrel is open, and the other end is provided with a first joint;

One end of the piston rod is provided with a piston adapted to the syringe, and the other end of the piston rod passes through the open end. A fluid infusion channel extending to the inner end of the piston is provided in the piston rod, and a second connector connected to the infusion hose is provided at the outer end of the fluid infusion channel, and a fluid inlet one-way valve is connected to the inner end of the fluid infusion channel;

The needle is connected to the first joint through a liquid outlet one-way valve, a hollow separation sheet is arranged at the end of the needle, and a plurality of liquid outlet holes are arranged outside the separation sheet.

Furthermore, the separation sheet is circular or elliptical in shape.

Furthermore, the number of the liquid outlet holes is 3-5.

Further, the second connector is connected to the second connector via a switch valve.

Furthermore, the piston rod includes a central tube, a stiffening plate arranged around the central tube, and a pressing plate arranged at the outer ends of the central tube and the stiffening plate, and the interior of the central tube forms the fluid replenishment channel.

Furthermore, a threaded interface is provided at the inlet end of the liquid inlet one-way valve, a liquid inlet one-way valve accommodating groove and a threaded interface accommodating groove are provided in sequence at the center of the inner end of the piston, a through hole connected to the threaded interface accommodating groove is provided at the center of the outer end of the piston, the liquid inlet one-way valve is adapted to be in the liquid inlet one-way valve accommodating groove, the threaded interface is adapted to be in the threaded interface accommodating groove, the inner end of the stiffening plate is against the outer end of the piston, and a threaded joint protruding from the inner end of the stiffening plate is provided at the inner end of the center tube, and the threaded joint passes through the through hole and is threadedly connected to the threaded interface.

Furthermore, the threaded interface sleeve is provided with a sealing gasket cushioned between the liquid inlet one-way valve accommodating groove and the liquid inlet one-way valve.

Furthermore, an annular groove is arranged around the piston, and a sealing ring is arranged in the annular groove and fits with the inner wall of the injection barrel.

The beneficial effects of the utility model are:

When the syringe sucks in the swelling fluid, the piston is pulled outward by the piston rod, negative pressure is generated in the syringe, and the liquid outlet one-way valve is closed to prevent the liquid in the chest tissue from flowing back. The liquid inlet one-way valve is opened, and the swelling fluid enters the fluid infusion channel through the infusion hose, and then enters the syringe through the liquid inlet one-way valve. When the syringe injects the swelling fluid, the piston is pushed inward by the piston rod, positive pressure is generated in the syringe, the liquid inlet one-way valve is closed, and the liquid outlet one-way valve is opened. The liquid in the syringe enters the needle through the liquid outlet one-way valve and is finally injected into the chest through the liquid outlet hole on the separation sheet. Therefore, the present application can realize the suction and injection of the syringe by operating the piston rod, and there is no need to pull out the needle for the second injection, which solves the problem that the existing hydraulic separator cannot continuously inject swelling fluid during the process of separating chest tissue, reduces the difficulty of surgery, and is more convenient to operate.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally marked with similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

FIG1 is a schematic structural diagram of an embodiment of the utility model;

FIG2 is a schematic diagram of the structure of the piston rod in an embodiment of the utility model;

FIG. 3 is a schematic diagram of the structure of a needle in an embodiment of the present utility model.

Figure markings: 100-syringe; 110-first joint; 200-piston rod; 210-piston; 211-liquid inlet one-way valve receiving groove; 212-threaded interface receiving groove; 213-perforation; 214-ring groove; 215-sealing ring; 220-fluid replenishing channel; 230-second joint; 240-liquid inlet one-way valve; 241-threaded interface; 250-switch valve; 260-center tube; 261-threaded joint; 270-stiffening plate; 280-pressing plate; 290-sealing pad; 300-needle; 310-liquid outlet one-way valve; 320-separation sheet; 330-liquid outlet hole; 400-infusion hose.

DETAILED DESCRIPTION

The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

As shown in FIG. 1 to FIG. 3 , an embodiment of the utility model provides a continuously injectable breast surgery tissue hydraulic separator, comprising a syringe 100 , a piston rod 200 and a needle 300 .

One end of the syringe 100 is open, and the other end is provided with a first connector 110 .

One end of the piston rod 200 is provided with a piston 210 adapted to the syringe 100, and an annular groove 214 is provided around the piston 210. A sealing ring 215 is provided in the annular groove 214 and is in contact with the inner wall of the syringe 100. The other end of the piston rod 200 passes through the open end, and a fluid replenishment channel 220 extending to the inner end of the piston 210 is provided in the piston rod 200. The outer end of the fluid replenishment channel 220 is provided with a second connector 230 connected to the infusion hose 400, and the inner end of the fluid replenishment channel 220 is connected to a liquid inlet one-way valve 240.

Preferably, the second connector 230 is connected to the second connector 230 via a switch valve 250 , so as to cut off the infusion hose 400 via the switch valve 250 .

The needle 300 is connected to the first connector 110 through a liquid outlet one-way valve 310. A hollow separation sheet 320 is provided at the end of the needle 300. A plurality of liquid outlet holes 330 are provided outside the separation sheet 320. In this embodiment, the shape of the separation sheet 320 is preferably circular or elliptical, and the number of the liquid outlet holes 330 is preferably 3-5.

When the syringe sucks the swelling fluid, the piston 210 is pulled outward by the piston rod 200, a negative pressure is generated in the syringe, and the liquid outlet one-way valve 310 is closed, which can prevent the liquid in the chest tissue from flowing back. The liquid inlet one-way valve 240 is opened, and the swelling fluid enters the fluid infusion channel 220 through the infusion hose 400, and then enters the syringe through the liquid inlet one-way valve 240. When the syringe injects the swelling fluid, the piston 210 is pushed inward by the piston rod 200, a positive pressure is generated in the syringe, the liquid inlet one-way valve 240 is closed, and the liquid outlet one-way valve 310 is opened. The liquid in the syringe enters the needle 300 through the liquid outlet one-way valve 310, and is finally injected into the chest through the liquid outlet hole 330 on the separation sheet 320. Therefore, the present application can realize the suction and injection of the syringe by operating the piston rod 200, and there is no need to pull out the needle 300 for the second injection, which solves the problem that the existing hydraulic separator cannot continuously inject swelling fluid during the process of separating chest tissue, reduces the difficulty of surgery, and is more convenient to operate.

In some embodiments, referring to FIG. 2 , the piston rod 200 includes a central tube 260 , a stiffening plate 270 disposed around the central tube 260 , and a pressing plate 280 disposed at the outer ends of the central tube 260 and the stiffening plate 270 . The interior of the central tube 260 forms a fluid replenishment channel 220 .

Preferably, a threaded interface 241 is provided at the inlet end of the liquid inlet check valve 240, a liquid inlet check valve accommodating groove 211 and a threaded interface accommodating groove 212 are provided in sequence at the center of the inner end of the piston 210, a through hole 213 connected to the threaded interface accommodating groove 212 is provided at the center of the outer end of the piston 210, the liquid inlet check valve 240 is adapted to be inserted into the liquid inlet check valve accommodating groove 211, the threaded interface 241 is adapted to be inserted into the threaded interface accommodating groove 212, the inner end of the stiffening plate 270 is against the outer end of the piston 210, and a threaded joint 261 is provided at the inner end of the center tube 260 which protrudes from the inner end of the stiffening plate 270, and the threaded joint 261 passes through the through hole 213 and is threadedly connected to the threaded interface 241. During assembly, the liquid inlet check valve 240 is inserted into the liquid inlet check valve receiving groove 211, and then the threaded joint 261 at one end of the piston rod 200 is passed through the through hole 213 in the piston 210 and tightened into the threaded interface 241 of the liquid inlet check valve 240. The piston rod 200, the piston 210 and the liquid inlet check valve 240 can be assembled, and the assembly is convenient.

In order to improve the sealing performance of the assembly between the piston 210 and the liquid inlet check valve 240 , the threaded interface 241 is covered with a sealing gasket 290 which is cushioned between the liquid inlet check valve receiving groove 211 and the liquid inlet check valve 240 .

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model.

Claims (8)

1. A continuously injectable breast surgery tissue hydraulic separator, characterized in that: Includes syringe barrel, piston rod and needle; One end of the injection barrel is open, and the other end is provided with a first joint; One end of the piston rod is provided with a piston adapted to the syringe, and the other end of the piston rod passes through the open end. A fluid infusion channel extending to the inner end of the piston is provided in the piston rod, and a second connector connected to the infusion hose is provided at the outer end of the fluid infusion channel, and a fluid inlet one-way valve is connected to the inner end of the fluid infusion channel; The needle is connected to the first joint through a liquid outlet one-way valve, a hollow separation sheet is arranged at the end of the needle, and a plurality of liquid outlet holes are arranged outside the separation sheet. 2. The continuously injectable breast surgery tissue hydraulic separator according to claim 1, characterized in that: The separation sheet is in a circular or elliptical shape. 3. The continuously injectable breast surgery tissue hydraulic separator according to claim 1, characterized in that: The number of the liquid outlet holes is 3-5. 4. The continuously injectable breast surgery tissue hydraulic separator according to claim 1, characterized in that: The second connector is connected to the second connector via a switch valve. 5. The continuously injectable breast surgery tissue hydraulic separator according to claim 1, characterized in that: The piston rod comprises a central tube, a stiffening plate arranged around the central tube, and a pressing plate arranged at the outer ends of the central tube and the stiffening plate. The interior of the central tube forms the fluid replenishment channel. 6. The continuously injectable breast surgery tissue hydraulic separator according to claim 5, characterized in that: The inlet end of the liquid inlet one-way valve is provided with a threaded interface, the center of the inner end of the piston is provided with a liquid inlet one-way valve accommodating groove and a threaded interface accommodating groove in sequence, the center of the outer end of the piston is provided with a through hole connected to the threaded interface accommodating groove, the liquid inlet one-way valve is adapted to the liquid inlet one-way valve accommodating groove, the threaded interface is adapted to the threaded interface accommodating groove, the inner end of the stiffening plate is against the outer end of the piston, the inner end of the center tube is provided with a threaded joint protruding from the inner end of the stiffening plate, the threaded joint passes through the through hole and is threadedly connected to the threaded interface. 7. The continuously injectable breast surgery tissue hydraulic separator according to claim 6, characterized in that: The threaded interface outer sleeve is provided with a sealing gasket between the liquid inlet one-way valve accommodating groove and the liquid inlet one-way valve. 8. The continuously injectable breast surgery tissue hydraulic separator according to claim 1, characterized in that: An annular groove is arranged around the piston, and a sealing ring is arranged in the annular groove and fits with the inner wall of the injection cylinder.