CN209996375U

CN209996375U - Aspiration rotary-cut biopsy trocar device

Info

Publication number: CN209996375U
Application number: CN201920394535.XU
Authority: CN
Inventors: 高宏; 涂艳阳; 纪勇; 沈宁; 熊震天
Original assignee: Wuxi Peoples Hospital
Current assignee: Wuxi Peoples Hospital
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-01-31
Anticipated expiration: 2029-03-27

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

Aspiration rotary-cut biopsy trocar device

Technical Field

The utility model relates to an kinds of trocar devices, especially kinds of aspiration rotary-cut biopsy trocar devices, which belongs to the technical field of medical instruments.

Background

Bone and soft tissue tumors are diseases seriously harming human health and life, the incidence rate gradually rises in recent years, the age of the disease gradually declines, early detection, correct diagnosis and timely treatment have important influence on prognosis, along with the continuous improvement of examination means and methods, the correct rate of diagnosis is gradually improved, but a large part of tumors still have no typical imaging characteristics and are difficult to diagnose, the correct diagnosis needs three combinations of clinic, image and pathology, wherein, the pathological diagnosis plays a key role in the selection of a treatment scheme.

The method is characterized in that the diameter of the sampling needle is large, the puncture wound is large, the sampled and captured tissue cannot effectively retract into the sampling needle after sampling, lesion spreading can be caused when the needle body and the grasping forceps are pulled out after sampling and detection are finished, in addition, times of puncture can only be performed for times, the efficiency is low, and the concept of extracting tissues as much as possible to improve the positive detection rate during sampling and detection is not met.

The clinical urgent need is kinds of needles with small wound, high picking and detecting efficiency and low spreading probability after pulling the needles.

Disclosure of Invention

The utility model aims at overcoming the not enough of existence among the prior art, provide kinds of suction rotary-cut biopsy trocar devices, its compact structure can effectively realize the puncture sample to the tissue, and the wound is little, gets to examine efficiently, pulls out the probability of scattering after the needle low, uses convenient operation, safe and reliable.

According to the technical scheme provided by the utility model, the aspiration rotary-cut biopsy trocar device comprises a puncture sampling needle for sampling after puncture, wherein the puncture sampling needle comprises a sampling outer tube and an attraction inner tube which can be embedded in the sampling outer tube, the attraction inner tube can rotate in the sampling outer tube, the lower end part of the sampling outer tube is provided with a puncture sampling tip, the lower side wall of the sampling outer tube is provided with an outer sampling port which penetrates through the tube wall of the sampling outer tube, and the lower side wall of the attraction inner tube is provided with an inner sampling port which penetrates through the attraction inner tube;

when the suction inner pipe is embedded in the sampling outer pipe, the inner sampling port can be aligned with the outer sampling port, and the suction inner pipe is communicated with the outer sampling port through the inner sampling port.

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

The negative pressure builder is connected with the head end of the suction inner tube, and tissues after sampling can be sucked into the negative pressure builder through the suction inner tube through the negative pressure builder.

The negative pressure builder comprises an attraction cylinder body, a piston body arranged in the attraction cylinder body and a piston rod arranged on the piston body, wherein the end of the piston rod is connected with the piston body, the other end of the piston rod is provided with a piston rod end handle, the piston rod is sleeved with an elastic body, the elastic body is positioned between the piston rod end handle and the end of the attraction cylinder body, and when the piston body is close to the bottom of a sampling needle in the attraction cylinder body, the elastic body is in a compressed state.

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

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

The upper end of the suction inner tube is provided with an inner tube connecting port which is positioned outside an outer tube connecting port at the upper end of the sampling outer tube; the suction cylinder body is provided with a cylinder body connector which can be matched and connected with the inner pipe connector of the suction inner pipe, and after the suction cylinder body is connected with the inner pipe connector through the cylinder body connector, the suction cylinder body can be connected and communicated with the suction inner pipe.

Still including setting up the outer tube connector on the sample outer tube, outer tube connector installs on the outer tube connector.

The sampling push rod can push out the tissue entering the suction inner tube.

The sampling outer tube is made of an ultrasonic developing material.

The utility model has the advantages that: the lower tip of sample outer tube is equipped with puncture sample pointed end, when utilizing puncture sample pointed end puncture sample, and the wound is little, gets to examine efficiently. The side wall of the lower part of the sampling outer pipe is provided with an outer sampling port which penetrates through the pipe wall of the sampling outer pipe, and the side wall of the lower part of the suction inner pipe is provided with an inner sampling port which penetrates through the suction inner pipe; utilize the rotation of attracting the inner tube in the sample outer tube, can realize the rotary-cut sample to the tissue, the tissue after the sample is in the cooperation of negative pressure establisher, can make the sample tissue get into to attract the barrel or keep somewhere in attracting the inner tube, the follow-up processing to the sample tissue of being convenient for, the probability of scattering after pulling out the needle is low, compact structure can effectively realize the puncture sample to the tissue, use convenient operation, safe and reliable.

Drawings

Fig. 1 is a schematic view of the present invention cooperating with a negative pressure builder.

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

Fig. 3 is a schematic view of the present invention with an external pipe connector.

Fig. 4 is a schematic view of the sampling push rod of the present invention.

FIG. 5 is a schematic diagram of another embodiments of the piercing 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 connector, 7-inner tube connector, 8-suction barrel, 9-piston body, 10-piston rod, 11-piston rod end handle, 12-elastomer, 13-upper end connecting positioning ring, 14-barrel connector, 15-sealing membrane, 16-outer tube connector, 17-sampling push rod and 18-push rod handle.

Detailed Description

The present invention will now be described with reference to the following specific figures and examples, at .

As shown in fig. 1, 3 and 5: in order to effectively realize the puncture sampling of tissues, the utility model discloses a puncture sampling needle for sampling after puncturing, the puncture sampling needle comprises a sampling outer tube 1 and an attraction inner tube 2 which can be embedded in the sampling outer tube 1, the attraction inner tube 2 can rotate in the sampling outer tube 1, the lower end part of the sampling outer tube 1 is provided with a puncture sampling tip 3, the lower side wall of the sampling outer tube 1 is provided with an outer sampling port 4 which is communicated with the tube wall of the sampling outer tube 1, and the lower side wall of the attraction inner tube 2 is provided with an inner sampling port 5 which is communicated with the attraction inner tube 2;

when attracting inner tube 2 and embedding in sample outer tube 1, interior sample connection 5 can be aimed at with outer sample connection 4, attracts inner tube 2 to pass through interior sample connection 5 and outer sample connection 4 intercommunication.

Specifically, the puncture sampling needle is made of a material conforming to the medical standard, the sampling outer tube 1 and the suction inner tube 2 are both straight tubular structures, 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 1 allows the suction inner tube 2 to be embedded, and allows the suction inner tube 2 to rotate in the sampling outer tube 1., the suction inner tube 2 and the sampling outer tube 1 are coaxially distributed after the suction inner tube 2 is placed in the sampling outer tube 1. the puncture sampling tip 3 is located at the lower end of the sampling outer tube 1. the puncture 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. the outer sampling port 4 penetrates through the side wall of the sampling outer tube 1, and the outer sampling port 4 is adjacent to the puncture sampling tip 3. of course, a tip can also be directly prepared at the lower end of the sampling outer.

The suction inner tube 2 is a straight tube with two open 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 through the tube wall of the suction inner tube 2. Interior sample connection 5 corresponds with outer sample connection 4, and when attracting inner tube 2 when 1 internal rotation of sample outer tube, interior sample connection 5 can be aimed at with outer sample connection 4 to attract inner tube 2 to pass through interior sample connection 5 and outer sample connection 4 intercommunication.

When the ultrasonic imaging device is used specifically, the sampling outer tube 1 is made of an ultrasonic imaging material, the outer wall of the sampling outer tube 1 is subjected to frosting treatment (can be clearly developed under ultrasonic waves), the lower end part of the sampling outer tube 1 is utilized to puncture the sampling tip 3 to enter a position to be sampled, after the puncture is successful, a tissue to be sampled can be sucked into the outer sampling port 4 and the inner sampling port 5, after the suction inner tube 2 rotates in the sampling outer tube 1, the rotary cutting benefit generated by the rotation of the suction inner tube 2 and the sampling outer tube 1 can be used for rotary cutting of the tissue introduced into the outer sampling port 4 and the inner sampling port 5, so that the sampling of the required tissue is realized, -like the tissue after sampling enters the suction inner tube 2 through the inner sampling port 5, when the puncture sampling tip 3 is utilized to puncture, the wound is small, the picking efficiency is high, and the scattering probability after the needle is pulled out.

During 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. The embodiment of the utility model provides an in, outer sample tooth is along the inner circle evenly distributed of outer sample mouth 4, and interior sample tooth is along the inner circle evenly distributed of interior sample mouth 5, utilizes outer sample tooth, interior sample tooth can realize the rotary-cut to the tissue, improves the sample efficiency to the tissue.

, the device also comprises a negative pressure builder which is connected with the sampling inner tube 2 in a matching way, the negative pressure builder is connected with the head end of the suction inner tube 2, and the tissue after sampling can be sucked into the negative pressure builder through the suction inner tube 2 by the negative pressure builder.

In the embodiment of the utility model, the negative pressure builder is connected with the head end of the suction inner tube 2, and the negative pressure builder can generate negative pressure in the suction inner tube 2, so that after the negative pressure is generated in the suction inner tube 2, the tissue to be rotary cut can be sucked into the outer sampling port 4 and the inner sampling port 5, even into the suction inner tube 2; when the tissue is sampled, under the action of negative pressure, the tissue after sampling can be sucked into the negative pressure builder through the suction inner tube 2, and then the tissue in the negative pressure builder enters the negative pressure builder, so that the tissue can be conveniently taken out for use, and the tissue pollution and other conditions are avoided.

In specific implementation, the negative pressure builder comprises an attraction cylinder 8, a piston body 9 arranged in the attraction cylinder 8 and a piston rod 10 arranged on the piston body 9, wherein the end of the piston rod 10 is connected with the piston body 9, the other end of the piston rod 10 is provided with a piston rod end handle 11, the piston rod 10 is sleeved with an elastic body 12, the elastic body 12 is positioned between the piston rod end handle 11 and the end of the attraction cylinder 8, and when the piston body 9 is close to the bottom of a sampling needle in the attraction cylinder 8, the elastic body 12 is in a compressed state.

The embodiment of the utility model provides an in, attract barrel 8 to be cylindric, the external diameter of piston body 9 and the internal diameter adaptation that attracts barrel 8, the inner wall that attracts barrel 8 is hugged closely to the outer wall of piston body 9, and piston body 9 passes through piston rod 10 drive back, can follow the length direction motion that attracts barrel 8 in attracting barrel 8, ends of piston rod 10 stretch into attract barrel 8 in and be connected with piston body 9, another end of piston rod 10 is located attracts barrel 8 outside and sets up piston rod end handle 11, is like, the external diameter of piston rod end handle 11 is greater than the internal diameter that attracts barrel 8.

The elastic body 12 can be made of elastic components such as a spring, and the elastic body 12 is sleeved on the piston rod 10, and when the piston body 9 moves towards the bottom of the suction cylinder body 8, the elastic body 9 can be in a compressed state through the piston rod end handle 11. When the elastic body 12 is in a compressed state and the elastic body 12 is elastically restored, the piston body 9 can be provided to move towards the upper end of the suction cylinder body 8, so that negative pressure can be generated in the suction cylinder body 8, and the negative pressure can realize suction of tissue to be rotary-cut and tissue after rotary-cut.

During specific implementation, the upper end of the suction cylinder 8 is provided with an upper end connecting positioning ring 13, the upper end connecting positioning ring 13 is positioned on the outer ring of the upper end of the suction cylinder 8, and the lower end of the elastic body 12 abuts against the upper end connecting positioning ring 13. The embodiment of the utility model provides an in, utilize the upper end to connect holding ring 13 and can support elastomer 12, the cooperation of holding ring 13 and piston rod end handle 11 is connected to the upper end, can realize the compression and the support to elastomer 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, and the sealing film 15 and the suction cylinder 8 are detachably connected.

The embodiment of the utility model provides an in, seal membrane 15 is the transparent film generally, utilizes seal membrane 15 can seal the observation and take out the window, can not influence the negative pressure state that attracts in the barrel 8 promptly, opens through seal membrane 15 and attracts behind the barrel 8, can take out the tissue that gets into and attract in the barrel 8, improves the convenience that the rotary-cut of tissue, collection and take out.

When the elastic body 12 and the piston body 9 are used for generating negative pressure in the suction cylinder body 8, the function of the existing negative pressure suction apparatus can be replaced, the condition that tissues are sucked into the drainage bag after being sucked by the existing negative pressure suction apparatus is avoided, meanwhile, the condition requirement on the negative pressure suction apparatus in the puncture sampling process can be reduced, and the operation cost is reduced.

, an inner tube connecting port 7 is arranged at the upper end of the suction inner tube 2, the inner tube connecting port 7 is positioned outside the outer tube connecting port 6 at the upper end of the sampling outer tube 1, a tube connecting head 14 which can be matched with the inner tube connecting port 7 of the suction inner tube 2 is arranged on the suction tube body 8, and after the suction tube body 8 is connected with the inner tube connecting port 7 through the tube connecting head 14, the suction tube body 8 can be connected and communicated with the suction inner tube 2.

The embodiment of the utility model provides an in, attract the upper end position of inner tube 2 to be located the upper portion of sample outer tube 1, attract barrel 8 to pass through barrel connector 14 and inner tube connector 7 adaptation connection. In addition, the sampling device also comprises an outer pipe connector 16 arranged on the sampling outer pipe 1, and the outer pipe connector 16 is arranged on the outer pipe connecting port 6, as shown in fig. 3. The outer pipe connector 16 can be forked or in other required shapes, and the sampling outer pipe 1 can be assembled on an ultrasonic probe or other instruments through the outer pipe connector 16 so as to realize ultrasonic sampling and other operations.

As shown in fig. 4, a sampling push rod 17 capable of pushing out the tissue entered into the suction inner tube 2 is further included. 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 cylinder 8 is insufficient to suck the sampled tissue into the suction cylinder 8, the sampled tissue remains in the suction inner tube 2. In order to take out the tissue in the suction inner tube 2, it is necessary to push the tissue in the suction inner tube 2 out of the suction inner tube 2 by the sampling push rod 17, that is, by the sampling push rod 17.

The utility model is characterized in that the lower end part of the sampling outer tube 1 is provided with a puncture sampling tip 3, the lower side wall of the sampling outer tube 1 is provided with an outer sampling port 4 which is communicated with the tube wall of the sampling outer tube 1, and the lower side wall of the suction inner tube 2 is provided with an inner sampling port 5 which is communicated with the suction inner tube 2; utilize the rotation of attracting inner tube 2 in sample outer tube 1, can realize the rotary-cut sample to the tissue, the tissue after the sample can make the sample tissue get into to attract in the barrel 8 or keep somewhere attracting in inner tube 2 at negative pressure establisher cooperation, the follow-up processing to the sample tissue of being convenient for, compact structure can effectively realize the puncture sample to the tissue, uses convenient operation, safe and reliable.

Claims

The aspiration rotary-cut biopsy trocar device is characterized by comprising a puncture sampling needle for sampling after puncture, wherein the puncture sampling needle comprises a sampling outer tube (1) and an attraction inner tube (2) which can be embedded in the sampling outer tube (1), the attraction inner tube (2) can rotate in the sampling outer tube (1), a puncture sampling tip (3) is arranged at the lower end part of the sampling outer tube (1), an outer sampling port (4) penetrating through the tube wall of the sampling outer tube (1) is arranged on the side wall of the lower part of the sampling outer tube (1), and an inner sampling port (5) penetrating through the attraction inner tube (2) is arranged on the side wall of the lower part of the attraction inner tube (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) can be communicated with the outer sampling port (4) through the inner sampling port (5).
2. The aspiration rotational atherectomy biopsy trocar device of claim 1, wherein: 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.
3. The aspiration rotational atherectomy biopsy trocar device of claim 1, wherein: the negative pressure builder is in adaptive connection with the suction inner tube (2), is connected with the head end of the suction inner tube (2), and can suck the sampled tissue into the negative pressure builder through the suction inner tube (2).
4. The aspiration rotary-cut biopsy trocar device according to claim 3, wherein the negative pressure builder comprises an aspiration cylinder (8), a piston body (9) arranged in the aspiration cylinder (8), and a piston rod (10) arranged on the piston body (9), wherein the end of the piston rod (10) is connected with the piston body (9), the other end of the piston rod (10) is provided with a piston rod end handle (11), the piston rod (10) is sleeved with an elastic body (12), the elastic body (12) is positioned between the piston rod end handle (11) and the end of the aspiration cylinder (8), and when the piston body (9) is close to the bottom of the sampling needle in the aspiration cylinder (8), the elastic body (12) is in a compressed state.
5. The aspiration rotational atherectomy biopsy trocar device of claim 4, wherein: the upper end of the suction cylinder body (8) is provided with an upper end connecting and positioning ring (13), the upper end connecting and positioning ring (13) is positioned on the outer ring of the upper end of the suction cylinder body (8), and the lower end of the elastic body (12) is propped against the upper end connecting and positioning ring (13).
6. The aspiration rotational atherectomy biopsy trocar device of claim 4, wherein: the suction cylinder (8) is provided with an observation taking-out window penetrating through the side wall of the suction cylinder (8) and a sealing film (15) used for sealing the observation taking-out window, and the sealing film (15) and the suction cylinder (8) are detachably connected.
7. The aspiration rotational atherectomy biopsy trocar device of claim 4, wherein: the upper end of the suction inner tube (2) is provided with an inner tube connecting port (7), and the inner tube connecting port (7) is positioned on the outer side of an outer tube connecting port (6) at the upper end of the sampling outer tube (1); the suction cylinder (8) is provided with a cylinder connector (14) which can be matched and connected with the inner pipe connector (7) of the suction inner pipe (2), and after the suction cylinder (8) is connected with the inner pipe connector (7) through the cylinder connector (14), the suction cylinder (8) can be connected and communicated with the suction inner pipe (2).
8. The aspiration rotational atherectomy biopsy trocar device of claim 6, wherein: still including setting up outer tube connector (16) on sample outer tube (1), outer tube connector (16) are installed on outer tube connector (6).
9. The aspiration rotational atherectomy biopsy trocar device of claim 1, wherein: the device also comprises a sampling push rod (17) which can push out the tissue entering the suction inner tube (2).
10. The aspiration rotational atherectomy biopsy trocar device of claim 1, wherein: the sampling outer tube (1) is made of an ultrasonic developing material.