CN209996375U - Aspiration rotary-cut biopsy trocar device - Google Patents

Abstract

The utility model relates to an suction rotary-cut biopsy trocar device, it is including the puncture sampling needle that is used for the sample after the puncture, puncture sampling needle includes the sample outer tube and can inlay in suction inner tube in the sample outer tube, suction inner tube can be at sample outer tube internal rotation, and the lower part lateral wall that the lower tip of sample outer tube was equipped with puncture sampling point-end and sample outer tube sets up and link up the outer sample mouth of sample outer tube pipe wall is setting up and link up in the lower part lateral wall that attracts the inner tube the interior sample mouth of suction inner tube, when suction inner tube inlays in the sample outer tube, interior sample mouth can be aimed at with outer sample mouth, attracts the inner tube to pass through interior sample mouth and outer sample mouth intercommunication, the utility model discloses compact structure can effectively realize the puncture sample to the tissue, and can prevent that the tissue of rotary-cut from being sucked in the drainage bag, uses convenient operation, safe and reliable.

Description

Suction and rotary biopsy trocar device

technical field

The utility model relates to a trocar device, in particular to a suction and rotary biopsy trocar device, which belongs to the technical field of medical instruments.

Background technique

Bone and soft tissue tumors are diseases that seriously endanger human health and life. In recent years, the incidence has gradually increased, and the age of onset has gradually decreased. Early detection, correct diagnosis, and timely treatment have an important impact on prognosis. With the continuous improvement of inspection methods and methods, the accuracy of diagnosis has gradually increased, but there are still a large number of tumors that do not have typical imaging characteristics, making diagnosis difficult. The correct diagnosis requires a combination of clinical, imaging and pathology. Among them, pathological diagnosis plays a key role in the choice of treatment plan. Needle biopsy is the main way to obtain pathological diagnosis.

At present, grasping forceps needles are mostly used for inspection, that is, grasping forceps are set in the needle body. After the sampling needle punctures into the lesion, the grasping forceps set in the sampling needle is pushed out to grasp the lesion. In this method, the diameter of the needle is larger, and the puncture trauma is larger; after the tissue is collected and grasped, it cannot be retracted effectively into the needle, and when the needle body and grasping forceps are pulled out after the inspection, the disease may spread; In addition, one puncture can only be grasped once, which is inefficient and inconsistent with the concept of taking as much tissue as possible to improve the positive detection rate.

There is an urgent need for a needle that has less trauma, high efficiency and low probability of dissemination after needle extraction.

SUMMARY OF THE INVENTION

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a suction and rotary biopsy trocar device, which has a compact structure, can effectively realize puncture and sampling of tissues, has small trauma, high efficiency of sampling and inspection, and can remove the needle. The probability of post-spreading is low, the use and operation are convenient, safe and reliable.

According to the technical solution provided by the present utility model, the suction and rotary biopsy trocar device includes a puncture sampling needle for sampling after puncture, and the puncture and sampling needle includes a sampling outer tube and can be embedded in the sampling outer tube The suction inner tube can be rotated in the sampling outer tube, the lower end of the sampling outer tube is provided with a puncture sampling tip, and the lower side wall of the sampling outer tube is provided with an outer sampling port penetrating the tube wall of the sampling outer tube, An inner sampling port passing through the suction inner tube is arranged on the lower side wall of the suction inner tube;

When the suction inner tube is embedded in the sampling outer tube, the inner sampling port can be aligned with the outer sampling port, and the suction inner tube communicates with the outer sampling port through the inner sampling port.

The inner circle of the outer sampling port is provided with a plurality of outer sampling teeth, and the inner circle of the inner sampling port is provided with a plurality of inner sampling teeth.

It also includes a negative pressure builder adapted to connect with the sampling inner tube, the negative pressure builder is connected with the head end of the suction inner tube, and the sampled tissue can be sucked into the negative pressure establishment through the suction inner tube through the negative pressure builder. inside the device.

The negative pressure builder includes a suction cylinder, a piston body arranged in the suction cylinder, and a piston rod arranged on the piston body. One end of the piston rod is connected to the piston body, and the other end of the piston rod is connected to the piston body. A piston rod end handle is provided; an elastic body is sleeved on the piston rod, and the elastic body is located between the end handle of the piston rod and the end of the suction cylinder. When the piston body is close to the bottom of the sampling needle in the suction cylinder, the elastic body is elastic The body is in a compressed state.

The upper end of the suction cylinder is provided with an upper connection and positioning ring, the upper connection and positioning ring is located on the outer ring of the upper end of the suction cylinder, and the lower end of the elastic body abuts on the upper connection and positioning ring.

The suction cylinder is provided with an observation and take-out window penetrating the side wall of the suction cylinder and a sealing film for sealing the observation and take-out window, and the sealing film and the suction cylinder are detachably connected.

The upper end of the suction inner tube is provided with an inner tube connection port, and the inner tube connection port is located outside the outer tube connection port of the upper end of the sampling outer tube; the suction cylinder body is provided with an inner tube connection port that can be adapted to the suction inner tube. The cylinder body connecting head is connected, and after the suction cylinder body is connected with the inner pipe connection port through the cylinder body connection head, the suction cylinder body can be connected and communicated with the suction inner pipe.

It also includes an outer pipe connection head arranged on the sampling outer pipe, and the outer pipe connection head is installed on the outer pipe connection port.

Also included is a sampling plunger that pushes tissue out of the suction inner tube.

The sampling outer tube is made of ultrasonic developing material.

The advantages of the utility model: the lower end of the sampling outer tube is provided with a puncture sampling tip, when the puncture sampling tip is used for puncturing and sampling, the trauma is small and the sampling efficiency is high. The lower side wall of the sampling outer tube is provided with an outer sampling port penetrating the tube wall of the sampling outer tube, and an inner sampling port penetrating the suction inner tube is set on the lower side wall of the suction inner tube; Rotation can realize rotary cutting and sampling of the tissue. The tissue after sampling is matched with the negative pressure builder, so that the sampled tissue can enter the suction cylinder or remain in the suction inner tube, which is convenient for the subsequent processing of the sampled tissue, and spreads after the needle is pulled out. The utility model has the advantages of low probability and compact structure, can effectively realize the puncture and sampling of the tissue, is convenient to use and operate, and is safe and reliable.

Description of drawings

FIG. 1 is a schematic diagram of the cooperation between the utility model and the negative pressure builder.

FIG. 2 is a schematic view of the suction cylinder of the present invention when an observation and take-out window and a sealing film are provided.

FIG. 3 is a schematic diagram of the utility model setting an outer pipe connecting head.

FIG. 4 is a schematic diagram of the sampling push rod of the present invention.

FIG. 5 is another implementation structural diagram of the puncture sampling needle of the present invention.

Description of reference numerals: 1-sampling outer tube, 2-suction inner tube, 3-puncture sampling tip, 4-outer sampling port, 5-inner sampling port, 6-outer tube connection port, 7-inner tube connection port, 8 -Suction cylinder, 9-piston body, 10-piston rod, 11-piston rod end handle, 12-elastomer, 13-upper connection positioning ring, 14-cylinder body connector, 15-sealing film, 16-outer tube Connector, 17-sampling push rod and 18- push rod handle.

Detailed ways

The utility model will be further described below in conjunction with the specific drawings and embodiments.

As shown in Figure 1, Figure 3 and Figure 5: In order to effectively realize the puncture sampling of the tissue, the utility model includes a puncture sampling needle for sampling after the puncture, and the puncture and sampling needle comprises a sampling outer tube 1 and can be embedded The suction inner tube 2 in the sampling outer tube 1, the suction inner tube 2 can be rotated in the sampling outer tube 1, the lower end of the sampling outer tube 1 is provided with a puncture sampling tip 3 and the lower side of the sampling outer tube 1 The wall is provided with an outer sampling port 4 penetrating the pipe wall of the outer sampling tube 1, and an inner sampling port 5 passing through the suction inner pipe 2 is provided on the lower side wall of the suction inner pipe 2;

When the suction inner tube 2 is embedded in the sampling outer tube 1 , the inner sampling port 5 can be aligned with the outer sampling port 4 , and the suction inner tube 2 communicates with the outer sampling port 4 through the inner sampling port 5 .

Specifically, the puncture sampling needle is made of materials that meet medical standards, the sampling outer tube 1 and the suction inner tube 2 are both straight tubular structures, and the inner diameter of the sampling outer tube 1 is larger than the outer diameter of the suction inner tube 2, that is, the sampling outer tube The tube 1 allows the suction inner tube 2 to be embedded, and allows the suction inner tube 2 to be rotated within the sampling outer tube 1 . Generally, after the suction inner tube 2 is placed in the sampling outer tube 1, the suction inner tube 2 and the sampling outer tube 1 are coaxially distributed. The puncture sampling tip 3 is located at the lower end of the sampling outer tube 1. The puncturing sampling tip 3 can be formed by chamfering the lower end of the sampling outer tube 1. The outer sampling port 4 is located at the lower part of the sampling outer tube 1, and the outer sampling port 4 passes through. The side wall of the outer tube 1 is sampled, and the outer sampling port 4 is adjacent to the puncture sampling tip 3 . Of course, it is also possible to directly prepare a tip at the lower end of the sampling outer tube 1, that is, to obtain a puncture sampling tip 3, as shown in FIG. 5 .

The suction inner tube 2 is a straight tube with open ends at both ends, the inner sampling port 5 is located at the lower part of the suction inner tube 2 , and the inner sampling port 5 penetrates the tube wall of the suction inner tube 2 . The inner sampling port 5 corresponds to the outer sampling port 4. When the suction inner tube 2 rotates in the sampling outer tube 1, the inner sampling port 5 can be aligned with the outer sampling port 4, thereby attracting the inner tube 2 to pass through the inner sampling port 5 and the outer sampling port 4. The sampling port 4 is communicated.

In specific use, the sampling outer tube 1 is made of ultrasonic developing material, and the outer wall of the sampling outer tube 1 is frosted (can be clearly developed under ultrasound). The lower end of the sampling outer tube 1 is punctured into the position to be sampled with the puncture sampling tip 3. After the puncture is successful, the tissue to be sampled can be sucked into the outer sampling port 4 and the inner sampling port 5, and the suction inner tube 2 is placed in the inner sampling port 5. After the sampling outer tube 1 is rotated inside, the tissue suctioned into the outer sampling port 4 and the inner sampling port 5 can be subjected to rotary cutting using the rotary cutting force generated by the rotation of the suction inner tube 2 and the sampling outer tube 1, so as to realize the sampling of the desired tissue. . Generally, the sampled tissue enters the suction inner tube 2 through the inner sampling port 5 . When the puncture sampling tip 3 is used for puncturing, the trauma is small, the sampling efficiency is high, and the probability of spreading after the needle is pulled out is low.

In specific implementation, the inner ring of the outer sampling port 4 is provided with a plurality of outer sampling teeth, and the inner ring of the inner sampling port 5 is provided with a plurality of inner sampling teeth. In the embodiment of the present utility model, the outer sampling teeth are evenly distributed along the inner circle of the outer sampling port 4, and the inner sampling teeth are evenly distributed along the inner circle of the inner sampling port 5, and the use of the outer sampling teeth and the inner sampling teeth can realize the rotational cutting of the tissue , to improve the sampling efficiency of the tissue.

Further, it also includes a negative pressure builder adapted to connect with the sampling inner tube 2, the negative pressure builder is connected with the head end of the suction inner tube 2, and the sampled tissue can be passed through the suction inner tube through the negative pressure builder. 2 Suction into the negative pressure builder.

In the embodiment of the present invention, the negative pressure builder is connected to the head end of the suction inner tube 2, and the negative pressure builder can generate negative pressure in the suction inner tube 2. The tissue to be rotated is sucked into the outer sampling port 4, the inner sampling port 5, and even into the suction inner tube 2; when the tissue is sampled, under the action of negative pressure, the sampled tissue can be sucked through the suction inner tube 2. Suction into the negative pressure builder and into the tissue in the negative pressure builder, which can be easily taken out and used, and avoids the occurrence of tissue contamination.

In specific implementation, the negative pressure builder includes a suction cylinder 8 , a piston body 9 arranged in the suction cylinder 8 and a piston rod 10 arranged on the piston body 9 . One end of the piston rod 10 is The piston rod 10 is connected with the piston body 9, and the other end of the piston rod 10 is provided with a piston rod end handle 11; an elastic body 12 is sleeved on the piston rod 10, and the elastic body 12 is located between the piston rod end handle 11 and the suction cylinder 8 Between the ends, when the piston body 9 approaches the bottom of the sampling needle in the suction cylinder 8, the elastic body 12 is in a compressed state.

In the embodiment of the present invention, the suction cylinder 8 is cylindrical, the outer diameter of the piston body 9 is adapted to the inner diameter of the suction cylinder 8, the outer wall of the piston body 9 is close to the inner wall of the suction cylinder 8, and the piston body 9 After being driven by the piston rod 10 , it can move in the suction cylinder 8 along the longitudinal direction of the suction cylinder 8 . One end of the piston rod 10 extends into the suction cylinder 8 and is connected to the piston body 9. The other end of the piston rod 10 is located outside the suction cylinder 8 and is provided with a piston rod end handle 11. Generally, the outer diameter of the piston rod end handle 11 is larger than The inner diameter of the cylindrical body 8 is sucked.

The elastic body 12 can be made of elastic components such as a spring. The elastic body 12 is sleeved on the piston rod 10. When the piston body 9 moves to the bottom of the suction cylinder 8, the elastic body 9 can be in a compressed state through the end handle 11 of the piston rod. . When the elastic body 12 is in a compressed state, when the elastic body 12 is elastically reset, it can provide the piston body 9 to move in the direction of the upper end of the suction cylinder 8, so that a negative pressure can be generated in the suction cylinder 8, and the negative pressure can realize The tissue to be ablated as well as the ablated tissue are attracted.

In specific implementation, the upper end of the suction cylinder 8 is provided with an upper connection and positioning ring 13 . In the embodiment of the present invention, the elastic body 12 can be supported by the upper connecting positioning ring 13 , and the cooperation between the upper connecting positioning ring 13 and the piston rod end handle 11 can realize the compression and support of the elastic body 12 .

As shown in FIG. 2 , the suction cylinder 8 is provided with an observation and extraction window penetrating the side wall of the suction cylinder 8 and a sealing film 15 for sealing the observation and extraction window. The sealing film 15 is connected to the suction cylinder 8 . Use detachable connections.

In the embodiment of the present invention, the sealing film 15 is generally a transparent film, and the sealing film 15 can seal the observation and take-out window, that is, the negative pressure state in the suction cylinder 8 will not be affected. After the suction cylinder 8 is opened through the sealing film 15, The tissue entering the suction cylinder 8 can be taken out, thereby improving the convenience of tissue rotary cutting, collection and taking out.

When the elastic body 12 and the piston body 9 are used to generate negative pressure in the suction cylinder 8, it can replace the function of the existing negative pressure suction device and avoid the situation that the tissue is sucked into the drainage bag after suction by the existing negative pressure suction device. At the same time, it can also reduce the conditional requirements for the negative pressure suction device during the puncture sampling process, and reduce the operation cost.

Further, the upper end of the suction inner pipe 2 is provided with an inner pipe connection port 7, and the inner pipe connection port 7 is located outside the outer pipe connection port 6 of the upper end of the sampling outer pipe 1; The inner tube connection port 7 of the inner tube 2 is adapted to be connected to the cylinder body connecting head 14. After the suction cylinder body 8 is connected to the inner tube connection port 7 through the cylinder body connection head 14, the suction cylinder body 8 can be connected and communicated with the suction inner tube 2. .

In the embodiment of the present invention, the upper end of the suction inner tube 2 is located at the upper part of the sampling outer tube 1 , and the suction cylinder 8 is adapted and connected to the inner tube connection port 7 through the cylinder connection head 14 . In addition, it also includes an outer tube connection head 16 arranged on the sampling outer tube 1 , and the outer tube connection head 16 is installed on the outer tube connection port 6 , as shown in FIG. 3 . The outer tube connector 16 can be in the shape of a fork or other desired shapes, and the outer sample tube 1 can be assembled on an apparatus such as an ultrasonic probe through the outer tube connector 16 to realize operations such as ultrasonic sampling.

As shown in FIG. 4 , it also includes a sampling push rod 17 that can push out the tissue entering the suction inner tube 2 . In the embodiment of the present invention, the sampling push rod 17 is in the shape of a straight rod, and the outer diameter of the sampling push rod 17 is smaller than the inner diameter of the suction inner tube 2 . The end of the sampling push rod 17 is provided with a push rod handle 18 . When the negative pressure in the suction barrel 8 is not enough to suck the sampled tissue into the suction barrel 8 , the sampled tissue will remain in the suction inner tube 2 . In order to take out the tissue in the suction inner tube 2 , the sampling plunger 17 needs to be used, that is, the sampling plunger 17 is used to push the tissue in the suction inner tube 2 out of the suction inner tube 2 .

The lower end of the sampling outer tube 1 of the present invention is provided with a puncture sampling tip 3 , and the lower side wall of the sampling outer tube 1 is provided with an outer sampling port 4 penetrating the tube wall of the sampling outer tube 1 . The inner sampling port 5 is arranged through the suction inner tube 2; the rotation of the suction inner tube 2 in the sampling outer tube 1 can be used to realize rotary cutting sampling of the tissue, and the tissue after sampling is matched with the negative pressure builder, which can make The sampled tissue enters the suction cylinder 8 or remains in the suction inner tube 2, which is convenient for subsequent processing of the sampled tissue.

Claims (10)

1. A suction and rotary biopsy trocar device, characterized in that it comprises a puncture sampling needle for sampling after puncturing, the puncture and sampling needle comprising a sampling outer tube (1) and an outer sampling tube that can be embedded in the sampling outer tube The suction inner tube (2) in (1), the suction inner tube (2) can be rotated in the sampling outer tube (1), and the lower end of the sampling outer tube (1) is provided with a puncture sampling tip (3) and sampling The lower side wall of the outer tube (1) is provided with an outer sampling port (4) penetrating the tube wall of the outer sampling tube (1), and the lower side wall of the suction inner tube (2) is provided with the inner suction tube (2) penetrating through the tube wall the inner sampling port (5); When the suction inner tube (2) is embedded in the sampling outer tube (1), the inner sampling port (5) can be aligned with the outer sampling port (4), and the suction inner tube (2) can pass through the inner sampling port (5) with the outer sampling port (4). The external sampling port (4) is communicated. 2 . The suction rotary biopsy trocar device according to claim 1 , wherein a plurality of outer sampling teeth are arranged on the inner ring of the outer sampling port ( 4 ), and a plurality of outer sampling teeth are arranged on the inner ring of the inner sampling port ( 5 ). 3 . Several internal sampling teeth. 3. The suction and rotary biopsy trocar device according to claim 1, characterized in that it further comprises a negative pressure builder adapted to connect with the suction inner tube (2), the negative pressure builder being connected to the suction inner tube The head end of (2) is connected, and the sampled tissue can be sucked into the negative pressure builder through the suction inner tube (2) through the negative pressure builder. 4. The suction rotary biopsy trocar device according to claim 3, wherein the negative pressure builder comprises a suction cylinder (8) and a piston body arranged in the suction cylinder (8). (9) and a piston rod (10) arranged on the piston body (9), one end of the piston rod (10) is connected with the piston body (9), and the other end of the piston rod (10) is provided with a piston rod An end handle (11); an elastic body (12) is sleeved on the piston rod (10), and the elastic body (12) is located between the end handle (11) of the piston rod and the end of the suction cylinder (8) , when the piston body (9) approaches the bottom of the sampling needle in the suction cylinder (8), the elastic body (12) is in a compressed state. 5. The suction rotary biopsy trocar device according to claim 4, characterized in that: the upper end of the suction cylinder (8) is provided with an upper end connecting and positioning ring (13), and the upper end connecting and positioning ring (13) is located at the upper end of the suction cylinder (8). The outer ring at the upper end of the cylinder body (8) is attracted, and the lower end of the elastic body (12) abuts on the upper end connecting and positioning ring (13). 6. The suction rotary biopsy trocar device according to claim 4, characterized in that: an observation and extraction window penetrating the side wall of the suction cylinder (8) is provided on the suction cylinder (8) and a window for sealing The sealing film (15) of the observation and take-out window is detachably connected to the suction cylinder (8). 7. The suction rotary biopsy trocar device according to claim 4, characterized in that: the upper end of the suction inner tube (2) is provided with an inner tube connection port (7), and the inner tube connection port (7) The outer side of the outer pipe connection port (6) at the upper end of the sampling outer pipe (1); the suction cylinder (8) is provided with the inner pipe connection port (7) of the suction inner pipe (2) which can be adapted to connect to the cylinder. After the suction cylinder (8) is connected to the inner pipe connection port (7) through the cylinder connection head (14), the suction cylinder (8) can be connected and communicated with the suction inner pipe (2). 8 . The suction and rotary biopsy trocar device according to claim 6 , further comprising: an outer tube connector ( 16 ) disposed on the sampling outer tube ( 1 ), the outer tube connector ( 16 ). ) is installed on the outer pipe connection port (6). 9 . The suction rotary biopsy trocar device according to claim 1 , further comprising a sampling push rod ( 17 ) capable of pushing out the tissue entering the suction inner tube ( 2 ). 10 . 10 . The suction and rotary biopsy trocar device according to claim 1 , wherein the sampling outer tube ( 1 ) is made of an ultrasonic imaging material. 11 .

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