CN211187365U - Biopsy sampling suction forceps - Google Patents

Abstract

The utility model provides a biopsy sampling suction forceps, which comprises a suction device, a limiting part, an outer tube handle, an inner core wire handle, wherein the inner core wire is arranged in the inner cavity of the outer tube and comprises a core tip section and a core body section, the core tip section penetrates out of the far end of the outer tube, the core body section penetrates out of the near end of the outer tube and is connected with the inner core wire handle, and the near end of the inner core wire handle is connected with the suction device; the limiting part is rotatably connected with the near end of the outer tube handle, the inner core wire handle is provided with a sliding block, and the sliding block is connected with the limiting part in a sliding manner; the suction type living body forceps realize functions of puncture deep biopsy, liquid suction and the like, and puncture operation is simplified to a great extent.

Description

A biopsy suction forceps

technical field

The utility model belongs to a medical device, in particular to a biopsy suction forceps.

Background technique

Transendoscopic puncture technology is a minimally invasive diagnosis and treatment technology completed through the working forceps of the endoscope. Although it is an advanced endoscopic technology, it has been maturely developed in the world in the past 30 years. The technology is to obtain diagnostic specimens of cells, tissues and liquids through puncture, and can also perform puncture and extraction therapy, and can also achieve the purpose of injection therapy. The currently used endoscopes for puncturing generally include endoscopic ultrasonography and non-ultrasonic endoscopes (ie, ordinary endoscopes). Ultrasound endoscopic puncture, transdigestive endoscopic puncture, transgastrointestinal endoscopic ultrasonography, etc.

The common feature of the existing puncture biopsy needle products is that the puncture depth cannot be selected during the cutting operation, which greatly limits the application scope of the puncture biopsy needle products, especially the TBNA biopsy puncture needle. The direction of the head is difficult to operate, making it impossible to choose clinically, which makes it impossible to perform surgery, or the puncture is too deep and the surgery fails.

Utility model content

In order to solve the above-mentioned technical problems, the purpose of the present utility model is to provide a biopsy suction forceps, which can realize the integration of tissue biopsy and simultaneous suction or drug administration process, and complete the operation at one time, including the inner core wire, Inner core wire handle, outer tube, outer tube handle, suction device connection interface, and pliers head;

One end of the outer tube is provided with an outer tube handle;

The inner core wire is located in the inner cavity of the outer tube, and the inner core wire includes a core tip section and a core body section, and the core tip section passes through the handle end of the outer tube and the outer tube; the core body section Passing out of the outer tube near the handle end of the outer tube, and fixedly connected with the handle of the inner core wire;

The inner core wire handle includes the suction device connection interface, and the suction device connection interface is connected with the external suction device and the inner core wire;

The inner core wire handle and the outer tube are slidably connected, the outer tube is provided with the limiting member, and the inner core wire handle is limited by the limiting member;

The end of the core tip section is provided with a pliers head;

The inner core wire passes through the outer tube body, and the two ends are respectively fixed to the inner core wire handle and the forceps head.

Preferably, in the above-mentioned biopsy suction forceps, a thumb ring is provided at one end of the outer tube handle.

Preferably, in the above-mentioned biopsy suction forceps, the sliding connection includes a slider provided on the inner core wire handle, and the slider is slidably connected with the limiting member.

The limiting components are conventional knowledge in the field, such as blocking bars, blocks and the like.

Preferably, in the above-mentioned biopsy suction forceps, the core tip segment is a sharp and uniform beveled needle tip, a semi-circular needle tip or an arc-shaped needle tip.

Preferably, in the above-mentioned biopsy suction forceps, the inner core wire is located in the outer tube, and there is an axial cavity between the inner core wire and the inner wall of the outer tube, one end of the inner core wire forms a tip, and one end of the distal core tip section is connected to the inner wall of the outer tube. The inner core wire handles are fixedly connected to each other.

Preferably, in the above-mentioned biopsy suction forceps, the outer tube is a spring tube, which is convenient for elastic stretching.

Preferably, in the above biopsy forceps, the size of the forceps head after being closed can match the inner diameter of the outer tube.

The purpose of the utility model is to provide a suction-integrated transendoscopic puncture biopsy instrument, which can meet the needs of endotracheal ultrasound mediation, and can also be used in the forceps channel of a non-ultrasonic endoscope to achieve deep puncture under direct vision. Biopsy, fluid extraction, etc., greatly simplifies the puncture operation and improves the operation safety.

Further, the suction device is a negative pressure device (such as a syringe, etc.), the cross-section of the inner core wire is a circular shape, the inner core wire passes through the body portion of the inner core wire, and the inner core wire is connected to the inner wall of the outer tube. There are axial gaps between them, the distal end of the inner core wire is beyond the distal end of the needle tip, and the proximal end is connected to the handle of the negative pressure device; the distal end of the inner core wire is a round head, a uniform slope or multiple slopes.

Further, the needle tip of the inner core wire is a sharp and uniform beveled needle tip, a semicircular needle tip or an arc-shaped needle tip.

The external suction device can communicate with the inner core wire, and the tip section of the core is open to ensure suction and facilitate drug administration.

Further, both the spring tube and the outer surface of the inner core wire may be provided with a lubricating layer, which is coated with PE (polyethylene) or PTFE (polytetrafluoroethylene) to play a role in lubricating protection.

The puncture effect of the biopsy instrument is ideal, especially suitable for obtaining long tissue specimens; the hardness of the inner core wire of the puncture biopsy needle is much smaller than that of other puncture needle designs of the same diameter, which makes the inner core wire follow the forceps channel. The operation resistance is reduced during flexion; at the same time, the needle length can be selected according to the required puncture depth during the operation; during the operation, the operator can freely choose whether to perform tissue biopsy or cell puncture aspiration. It greatly simplifies the puncture operation and improves the safety of the operation. It is not only suitable for endoscopic ultrasonography of the digestive tract, but also suitable for endotracheal ultrasonography, and is also suitable for puncture under conventional non-ultrasonic endoscopy.

The three main features of this utility model are:

1. It can realize the functions of flushing, suction treatment and sampling at the same time.

2. The rotation function of the sampling forceps can be realized by rotating the handle, which is convenient for sampling the side wall.

3. The sampling end can be completely retracted into the lumen of the outer tube, which is convenient for surgical operation.

Description of drawings

Figure 1: Structure diagram of biopsy suction forceps;

Figure 2: Outline drawing of biopsy suction forceps;

Figure 3: The open view of the sampling forceps head;

Figure 4: Closed view of the sampling forceps head.

1—Suction device interface 2—Suction interface hose 3—Outer tube handle 4—Sliding handle 5—Limiting part 6—Spring tube 7—Sampling pliers head 8—Inner core wire 9—Guide tube 10— - Thumb Ring 11 - Plier Cup 12 - Thimble

Detailed ways

The following experimental examples are used to further illustrate the present utility model but are not limited to the present utility model. All technologies realized based on the above content of the present invention belong to the scope of the present invention.

Example 1

Referring to Figures 1-4, the figure is a disposable biopsy suction forceps, including an outer tube (spring tube 6), an outer tube handle 1, a limit part 5, a sliding handle 4, and a sampling forceps head 7 (mainly composed of a forceps cup). 11), inner core wire 8; wherein the sliding handle 4 is slidingly matched with the limiting member 5 to ensure that the sliding handle 4 slides on the outer tube, one side of the outer tube is connected with the outer tube handle 3, and the other side of the outer tube is provided with a guide tube 9 (a part of the outer tube handle 1, which surrounds the spring tube 6 and plays a guiding role for the spring tube 6), the thumb ring 10 at the end of the outer tube handle. The sliding handle 4 (ie the inner core wire handle) is fixedly connected with the spring tube 6, and the spring tube 6 is provided with an inner core wire 8, the end of the inner core wire is a core tip section, and the inner core wire 8 is connected to the spring. The inner wall of the tube 8 has an axial gap (the two ends of the inner core wire 8 are respectively connected to the sampling forceps head 7 and the sliding handle 4 on the needle tip, so as to ensure that the sliding handle 4 can control the opening, closing and rotation of the sampling forceps head 7). The distal needle tip of the inner core wire is connected to the external suction device through the suction port hose 2 and the suction device port 1; wherein the core tip section is welded with a forceps cup 11, and the center of the forceps cup 11 (tweezers-like structure) It is fixed (eg welded) with the core tip section to form an integral body. The pliers cup 11 is pushed and pulled by the inner core wire (or sliding handle 4) and blocked by the spring tube 6 to complete the opening, closing and rotation, and expose the thimble 12 of the core tip section. (That is, the core tip section formed by the inner core wire 8, the inner core wire is a hollow tube, and the suction action is completed by an external suction device), and the tip of the thimble 12 is designed with an inclined surface.

The length of the inner core wire is 1m, the outer diameter is 2mm, the inner core wire is 1.5mm (adjusted according to the mechanical force), and the outer diameter of the core tip section is 1.8mm.

Claims (8)

1. A biopsy sampling suction forceps is characterized by comprising an inner core wire, an inner core wire handle, a limiting component, an outer tube handle, a suction device connecting interface and a forceps head;

an outer tube handle is arranged at one end of the outer tube;

the inner core wire is positioned in the inner cavity of the outer tube and comprises a core tip section and a core body section, and the core tip section penetrates out of the handle end of the outer tube far away from the outer tube; the core body section penetrates through the end, close to the outer pipe handle, of the outer pipe and is fixedly connected with the inner core wire handle;

the inner core wire handle comprises the suction device connecting interface which is connected with an external suction device and the inner core wire;

the inner core wire handle is connected with the outer pipe in a sliding mode, the limiting component is arranged on the outer pipe, and the inner core wire handle is limited by the limiting component;

the tail end of the core tip section is provided with a tong head;

the inner core wire penetrates through the outer pipe body, and two ends of the inner core wire are fixedly connected with the inner core wire handle and the tong head respectively.

2. The biopsy sampling forceps of claim 1 wherein the outer tube handle has a thumb ring at one end.

3. The biopsy sampling forceps of claim 1, wherein the sliding connection comprises a slider on the inner core wire handle, the slider being slidably connected to the stop member.

4. The biopsy sampling forceps of claim 1 wherein the core tip segment is a sharp uniform bevel tip, a semi-circular tip, or a curved tip.

5. The biopsy sampling forceps of claim 1, wherein the inner core wire is disposed within the outer tube with an axial space therebetween, and one end of the inner core wire forms a tip, and one end of the distal core tip section is fixedly connected to the inner core wire handle.

6. The biopsy sampling forceps of claim 1, wherein the body of the outer tube is a spring tube.

7. The biopsy sampling forceps of claim 1, wherein the closed jaw size is adapted to match an inner diameter of the outer tube.

8. The biopsy sampling forceps of claim 1, wherein the outer surface of the core wire is provided with a lubricating layer.

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