CN110960268A

CN110960268A - Tissue minimally invasive sampler for livestock

Info

Publication number: CN110960268A
Application number: CN202010008598.4A
Authority: CN
Inventors: 李孝文; 樊士冉; 刘聪; 张志勇; 樊铭玉
Original assignee: Xiajin New Hope Liuhe Agriculture And Animal Husbandry Co ltd; Tibet Xinhao Technology Co ltd; Shandong New Hope Liuhe Group Co Ltd; New Hope Liuhe Co Ltd
Current assignee: Xiajin New Hope Liuhe Agriculture And Animal Husbandry Co ltd; Tibet Xinhao Technology Co ltd; Shandong New Hope Liuhe Group Co Ltd; New Hope Liuhe Co Ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-04-07
Anticipated expiration: 2040-01-06
Also published as: CN110960268B

Abstract

The invention discloses a minimally invasive tissue sampler for livestock and belongs to the technical field of special instruments for animal husbandry. The technical scheme is as follows: a minimally invasive tissue sampler for livestock comprises a needle cylinder, push rods penetrating through two ends of the needle cylinder, a seal head arranged at the tail end of the needle cylinder and movably connected to the corresponding end part of the push rod, and a trocar arranged at the head end of the needle cylinder, sleeved on the corresponding end part of the push rod and slidably matched with the push rod along the central line direction of the trocar. The invention has the beneficial effects that: the minimally invasive tissue sampler for livestock provided by the invention has the advantages of high sampling efficiency, short sampling time, less blood flow of living tissues, simple structure and operation, ingenious design, good adaptability, time and labor conservation and high application value.

Description

Tissue minimally invasive sampler for livestock

Technical Field

The invention relates to the technical field of special instruments for animal husbandry, in particular to a minimally invasive tissue sampler for livestock.

Background

Under the situation of African swine fever, the pig industry faces a great challenge. Early diagnosis and accurate elimination in a non-plague-suffering pig herd are crucial to control and purification of African swine fever, and epidemic situation loss can be effectively reduced. At present, pigs only sample and collect nasal and anal swabs, oral fluid and the like for early non-plague diagnosis, but false positive or false negative often appears, early diagnosis of epidemic situation is affected, and elimination opportunity is delayed. The lymphoid organs are the first place for colonization of the virus, and non-pestigens can be monitored earlier and more reliably.

However, in the past, the collection of lymph node tissues of living pigs is difficult, and the application and popularization of a detection and diagnosis mode of the lymph node pathogens of the living pigs are influenced. The development of a rapid and effective tissue sampling tool is a problem to be solved urgently.

Disclosure of Invention

In order to solve the problems of difficult collection of lymph node tissues of living pigs and the like, the invention provides the minimally invasive livestock tissue sampler which has the advantages of high sampling efficiency, short sampling time, less blood flow of the living tissues, simple structure and operation, ingenious design, good adaptability, time saving, labor saving and high application value.

In order to achieve the purpose, the invention provides a minimally invasive tissue sampler for livestock, which comprises a needle cylinder, push rods, end sockets, a trocar, a needle tube and a needle, wherein the push rods penetrate through two ends of the needle cylinder;

further, the trocar includes the needle stalk, sets up the pintle of needle stalk one end sets up the needle point of the needle stalk other end is seted up on the needle stalk lateral wall, be close to the sampling hole of needle point department, and set up the sampling hole is close to the barb of needle point portion.

During sampling, the end part of the push rod close to the head end of the needle cylinder is placed on one side of the sampling hole far away from the needle point, the trocar is penetrated into a tissue to be sampled from the needle point of the sampler and then the sampler is pulled out, and at the moment, due to the existence of the barb, a sampling substance is remained in the sampling hole; during the inspection, press the tip that the push rod is close to the cylinder tail end to the tip that the push rod is close to the cylinder head end and cross needle point front end position department, at the in-process that the push rod was promoted, push out the sampling material who remains in the sampling hole to appointed container by the needle point in, have easy operation, the sampling is high-efficient, and the sampling time is short, the effect that the living body tissue blood is few.

Furthermore, the push rod and the cross section of trocar sliding fit tip, with the cross section phase-match of needle stalk inner wall guarantees that the sampling material of remaining in the sampling hole can once only be pushed out completely, improves sampling efficiency.

Furthermore, animal is with tissue wicresoft sample thief still including setting up the cylinder with the resilience structure between the push rod is convenient to the push rod is replied after pushing out the sampling material, and the tip that the push rod is close to the cylinder head end promptly returns to the one side that the needle point was kept away from to the sampling hole, further improves sampling efficiency.

Furthermore, the end part of the push rod, which is close to the tail end of the needle cylinder, is provided with a snap ring, and the rebound structure comprises a spring arranged between the snap ring and the needle cylinder, so that the structure is simple and the operation is convenient.

Further, the snap ring is located in the cylinder, including being close to the first snap ring of cylinder tail end, first snap ring forms spacing relation with the head, prevents when kick-backing, the push rod with the trocar breaks away from the cooperation relation, and/or the push rod is popped out outside the cylinder, and is close to the second snap ring of cylinder head end, it is convenient right the flexible holding surface that provides of spring, the spring housing is established on the push rod, be located the second snap ring with between the cylinder head end.

Furthermore, the push rod includes that the base rod and the guide arm that meet the setting in proper order along the central line direction, and set up on the guide arm the snap ring can distinguish the push rod both ends fast to install fast the sample thief.

Furthermore, the cross section size of the base rod is larger than that of the guide rod, so that the rigidity of the push rod is ensured, and the bending deformation is prevented when the push rod is pressed.

Furthermore, the snap ring with the push rod joint is connected, easy to assemble the head.

Furthermore, the minimally invasive livestock tissue sampler further comprises a plug arranged between the needle cylinder and the trocar, so that the trocar is prevented from being separated from the head end of the needle cylinder when the needle is pulled out.

Furthermore, the plug is in threaded connection with the head end of the needle cylinder.

Further, the cylinder head end is equipped with the nipple, the central line of nipple with the coincidence of the central line of cylinder, on the one hand conveniently connect the trocar, on the other hand, can be in the installation on-the-spot the guide arm plays the guide effect, makes the guide arm with trocar snap-on.

The invention has the beneficial effects that: (1) the minimally invasive livestock tissue sampler provided by the invention is simple to operate and efficient in sampling, and solves the problem of difficulty in traditional sampling;

(2) the minimally invasive sampler for the tissues of the livestock has short sampling time and less blood flow of living tissues, and effectively reduces the pollution of pathogens to the environment;

(3) the minimally invasive tissue sampler for livestock provided by the invention has the advantages of simple structure, high reliability, good adaptability, strong maintainability and the like, is simple in use process, and has extremely high application value.

(4) The minimally invasive tissue sampler for the livestock provided by the invention is ingenious in design, and the use scenes are fully combined during design, so that the matching performance is higher, the problem that the lymph node tissue of the living pig is difficult to collect in the past is solved to a great extent, the labor and time cost is saved, and the minimally invasive tissue sampler has obvious advantages.

Drawings

FIG. 1 is a schematic structural diagram of an external appearance in embodiment 1 of the present invention;

FIG. 2 is a schematic view of the structure of embodiment 1 of the present invention taken along the center line of the cylinder;

FIG. 3 is a schematic structural view of a putter in embodiment 2 of the present invention;

fig. 4 is a schematic structural view of a snap ring according to embodiment 2 of the present invention;

FIG. 5 is a schematic structural view of another snap ring according to embodiment 2 of the present invention;

FIG. 6 is a schematic view showing an assembly relationship between the sealing head and the push rod in embodiment 3 of the present invention;

FIG. 7 is a schematic view showing an assembly relationship between the sealing head and the push rod in embodiment 4 of the present invention;

FIG. 8 is a schematic structural diagram showing the appearance of examples 5 to 6 of the present invention;

fig. 9 is a schematic structural view of a limiting plate in embodiment 6 of the present invention;

fig. 10 is a schematic structural view of a plug in embodiment 6 of the present invention;

FIG. 11 is a schematic structural diagram of the appearance of

embodiments

5 and 7 of the present invention;

fig. 12 is a schematic structural view of a limiting plate in embodiment 7 of the present invention;

fig. 13 is a schematic structural view of a plug in embodiment 7 of the present invention;

fig. 14 is a left side view of a stop collar in accordance with embodiments 5-7 of the present invention.

Wherein the reference numerals are: 1. a push rod; 1-1, a base rod; 1-1-1, connecting groove; 1-1-2, a pressing part; 1-2, a guide rod; 1-3, a snap ring; 1-3-a, a first snap ring; 1-3-b, a second snap ring; 1-3-1, a ring body; 1-3-2, a clamping part; 1-3-3, deletion; 2. sealing the end; 2-1, long round through holes; 3. a spring; 4. a needle cylinder; 4-1, nipple; 5. a trocar; 5-1, pintle; 5-2, needle peduncle; 5-3, a needle tip; 5-4, sampling holes; 5-5, barbs; 6. a plug; 6-1, a chute; 6-2, limiting grooves; 7. a limiting sleeve; 7-1, a slot; 7-2, arc-shaped limiting ends; 8. a limiting sheet; 8-a, a first limiting sheet; 8-a-1, a first plug board; 8-a-2 and a first limiting block; 8-a-3, a first sync block; 8-a-4, a threaded post; 8-b and a second limiting sheet; 8-b-1 and a second plug board; 8-b-2 and a second limiting block; 8-b-3, a second synchronization block; 9. a fastener.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

Example 1

Referring to fig. 1 to 2, an embodiment of the present invention provides a minimally invasive tissue sampler for livestock, including a needle cylinder 4 having a nipple 4-1 at a head portion, a push rod 1 penetrating both ends of the needle cylinder 4 and composed of a base rod 1-1, a guide rod 1-2 and a snap ring 1-3, a seal head 2 sleeved and slidably fitted on the base rod 1-1, a trocar 5 sleeved on the guide rod 1-2 at a tail end of the needle cylinder 4, a trocar 5 sleeved on the end portion of the nipple 4-1, a spring 3 sleeved on the base rod 1-1 and arranged between a head end of the needle cylinder 4 and the snap ring 1-3, and a plug 6 arranged between the needle cylinder 4 and the trocar 5;

the trocar 5 comprises a needle stem 5-2, a pintle 5-1 arranged at one end of the needle stem 5-2, a needle tip 5-3 arranged at the other end of the needle stem 5-2, a sampling hole 5-4 arranged on the side wall of the needle stem 5-2 and close to the needle tip 5-3, and a barb 5-5 arranged at the end of the sampling hole 5-4 close to the needle tip 5-3.

Preferably, the snap ring 1-3 is positioned in the needle cylinder 4 and comprises a first snap ring 1-3-a close to the tail end of the needle cylinder 4 and a second snap ring 1-3-b close to the head end of the needle cylinder 4, and the spring 3 is sleeved on the push rod 1 and positioned between the second snap ring 1-3-b and the head end of the needle cylinder 4;

preferably, the tail end of the needle cylinder 4 is in threaded connection or interference fit with the end socket 2;

preferably, the cross section of the guide rod 1-2 is matched with the cross section of the inner wall of the needle stem 5-2, or the cross section of the end part of the guide rod 1-2 far away from the base rod 1-1 is matched with the cross section of the inner wall of the needle stem 5-2;

preferably, the needle stem 5-2 penetrates through the plug 6, the pintle 5-1 is clamped with one end of the plug 6, and the other end of the plug 6 is in threaded connection or clamped connection with the head end of the needle cylinder 4;

example 2

Referring to fig. 3 to 5, the embodiment 1 is the same as the embodiment 1 except that: the base rod 1-1 is connected with the snap ring 1-3 in a clamping manner;

two connecting grooves 1-1-1 are formed in the outer circumferential surface of the base rod 1-1 along the circumferential direction, wherein one connecting groove 1-1-1 is close to the pressing part 1-1-2 of the base rod 1-1, and the other connecting groove 1-1-1 is close to the guide rod 1-2;

preferably, the snap ring 1-3 comprises a ring body 1-3-1 and an elastic clamping part 1-3-2 arranged on the inner wall of the ring body 1-3-1; the inner diameter of the ring body 1-3-1 is slightly larger than the outer diameter of the base rod 1-1, and the clamping part 1-3-2 is matched with the connecting groove 1-1-1; in a further preferable scheme, the ring body 1-3-1 is made of a rigid material;

in another preferred scheme, the snap ring 1-3 comprises an elastic ring body 1-3-1, which is arranged on the ring body 1-3-1 along the radial direction and penetrates through the missing part 1-3-3 of the inner wall and the outer wall of the ring body 1-3-1; the inner diameter of the ring body 1-3-1 is slightly smaller than the outer diameter of the base rod 1-1, and the inner wall of the ring body 1-3-1 is matched with the connecting groove 1-1-1; the snap ring 1-3 can be installed at the connecting groove 1-1-1 or disassembled by applying outward force on two sides of the missing part 1-3-3.

Example 3

Referring to fig. 6, the rest of the example 1 is the same as that of the example 1, except that: the base rod 1-1 is fixedly connected with the snap ring 1-3, and the pressing part 1-1-2 positioned at the end part of the base rod 1-1 is detachably connected with the base rod 1-1.

Example 4

Referring to fig. 7, the embodiment 1 is the same as the embodiment 1 except that: the base rod 1-1 is fixedly connected with the clamping ring 1-3, the clamping ring 1-3 is arranged in an oblong shape, and the end enclosure 2 is provided with an oblong through hole 2-1 matched with the clamping ring 1-3.

When the device is disassembled and assembled, the push rod 1 or the seal head 2 is rotated to enable the clamp ring 1-3 to be matched with the long round through hole 2-1; when the device is used, the push rod 1 or the seal head 2 is rotated, and the limit relation between the snap ring 1-3 and the seal head 2 is achieved.

Example 5

Referring to fig. 8 to 14, the embodiment 1 is the same as the embodiment 1 except that: a sliding groove 6-1 is formed in the circumferential surface of the outer side of the plug 6 along the direction parallel to the central line of the plug 6, a plurality of limiting grooves 6-2 communicated with the sliding groove 6-1 are formed in the circumferential direction, and at least one end of the sliding groove 6-1 extends to the end face of the plug 6;

the minimally invasive livestock tissue sampler further comprises a limiting component arranged on the plug 6 and/or the needle cylinder 4, and preferably, the limiting component is arranged on the plug 6; the exposed length of the needle tip 5-3 can be controlled, and the penetration depth during sampling can be accurately controlled.

The limiting assembly comprises a limiting sleeve 7 and a limiting sheet 8 arranged on the limiting sleeve 7;

the limiting sheet 8 is matched with the sliding groove 6-1 and/or the limiting groove 6-2;

preferably, the limiting sleeve 7 is in a cylindrical shape, the inner diameter of which is matched with the maximum outer diameter of the plug 6; one end of the cylindrical limiting sleeve 7 is provided with an arc-shaped limiting end 7-2 which is bent inwards, and the end surface of the other end is provided with a slot 7-1 along the direction parallel to the central line thereof; the limiting sheet 8 is inserted in the slot 7-1, and the limiting sheet 8 is in sliding fit with the slot 7-1;

the limiting piece 8 is provided with a limiting block, the limiting block is in sliding fit with the sliding groove 6-1 to perform limiting adjustment on the limiting assembly, and the limiting block is clamped with the limiting groove 6-2 to position the limiting assembly.

Example 6

Referring to fig. 8, 9, 10 and 14, the embodiment 5 is the same as the embodiment 5 except that: the limiting assembly comprises a limiting sleeve 7, a first limiting sheet 8-a arranged on the limiting sleeve 7 and a fastening piece 9 arranged between the limiting sleeve 7 and the first limiting sheet 8-a; the length of the first limiting piece 8-a is smaller than that of the slot 7-1;

the first limiting sheet 8-a comprises a first inserting plate 8-a-1, a first limiting block 8-a-2 arranged on one side surface of the first inserting plate 8-a-1 and a threaded column 8-a-4 arranged on the other side surface of the first inserting plate 8-a-1 and used for connecting a fastening piece 9;

preferably, the first inserting plate 8-a-1 is made of transparent materials, so that the sight line penetrates through the first inserting plate 8-a-1 when the first inserting plate is convenient to install, the first limiting block 8-a-2 is rapidly matched with the sliding groove 6-1, the limiting groove 6-2 is rapidly found, the first limiting block 8-a-2 is buckled with the first limiting block, and the adjusting efficiency is further improved;

preferably, the first limiting sheet 8-a further comprises a first synchronous block 8-a-3 which is arranged on the side surface of the first inserting plate 8-a-1 provided with the threaded column 8-a-4 and corresponds to the first limiting block 8-a-2, so that the position of the first limiting block 8-a-2 can be determined more intuitively;

preferably, the number of the spacing grooves 6-2 is one.

When the sampling device is used, the limiting sleeve 7 is sleeved on the plug 6 and rotates until the slot 7-1 is close to and aligned with the sliding groove 6-1, the first inserting plate 8-a-1 is inserted into the slot 7-1, the first limiting block 8-a-2 slides along the sliding groove 6-1 to the limiting groove 6-2, the first limiting block 8-a-2 is buckled with the limiting groove 6-2, the position of the limiting sleeve 7 is adjusted until the distance from the needle point 5-3 to the exposed arc-shaped limiting end 7-2 is proper, and the sampling operation can be carried out by fastening the fastening piece.

Example 7

Referring to fig. 11 to 14, the embodiment 5 is otherwise the same as the embodiment 5, except that: the limiting piece 8 is arranged to be a second limiting piece 8-b, the length size of the second limiting piece 8-b is the same as that of the slot 7-1, and at least one group of opposite side surfaces are tightly attached to the corresponding inner wall of the slot 7-1;

the second limiting sheet 8-b comprises a second inserting plate 8-b-1 and a plurality of second limiting blocks 8-b-2 which are uniformly arranged on one side surface of the second inserting plate 8-b-1;

preferably, the second inserting plate 8-b-1 is made of transparent material, and the function and the effect are similar to those of the first inserting plate 8-a-1 made of transparent material in the embodiment 6;

preferably, the second limiting sheet 8-b is arranged on the other side surface of the first inserting plate 8-b-1, and the second synchronizing blocks 8-b-3 corresponding to the plurality of second limiting blocks 8-b-2 respectively have similar functions and effects to those of the first synchronizing block 8-a-3 relative to the first limiting block 8-a-2 in embodiment 6;

preferably, both sides of the sliding groove 6-1 are provided with limiting grooves 6-2, so that the limiting precision of the limiting sleeve 7 is improved;

preferably, the limiting grooves 6-2 at two sides of the sliding groove 6-1 are arranged in a staggered manner;

preferably, the distances between two adjacent limiting grooves 6-2 on the same side are equal;

preferably, the distance between two adjacent limiting grooves 6-2 on one side is equal to the distance between two adjacent limiting grooves 6-2 on the other side;

preferably, the distance between two adjacent second limiting blocks 8-b-2 is equal to the distance between two limiting grooves 6-2 at the head and the tail of the same side, so that the adjustment continuity is improved.

When the sampling device is used, the second inserting plate 8-b-1 is inserted into the slot 7-1, the slot 7-1 is close to and aligned with the sliding groove 6-1, then the limiting sleeve 7 is sleeved on the plug 6, the second limiting block 8-b-2 slides along the sliding groove 6-1, the position of the limiting sleeve 7 is adjusted until the distance from the needle point 5-3 to the arc limiting end 7-2 is proper, the limiting sleeve 7 is relatively rotated, and the second limiting block 8-b-2 is buckled with the limiting groove 6-2 in the corresponding position, so that sampling operation can be carried out.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The minimally invasive tissue sampler for livestock is characterized by comprising a needle cylinder (4), wherein a push rod (1) penetrating through two ends of the needle cylinder (4) is arranged at the tail end of the needle cylinder (4), is movably connected with a seal head (2) at the corresponding end part of the push rod (1), is arranged at the head end of the needle cylinder (4), is sleeved at the corresponding end part of the push rod (1), and is in sliding fit with a trocar (5) of the push rod (1) along the central line direction.

2. The minimally invasive tissue sampler for livestock according to claim 1, characterized in that the trocar (5) comprises a needle stem (5-2), a pintle (5-1) arranged at one end of the needle stem (5-2), a needle point (5-3) arranged at the other end of the needle stem (5-2), a sampling hole (5-4) arranged on the side wall of the needle stem (5-2) and close to the needle point (5-3), and a barb (5-5) arranged at the end of the sampling hole (5-4) and close to the needle point (5-3).

3. Minimally invasive sampler of tissues for livestock according to claim 2, characterized in that the cross section of the end of the push rod (1) which is in sliding fit with the trocar (5) is matched with the cross section of the inner wall of the needle stem (5-2).

4. Minimally invasive livestock tissue sampler according to any of claims 1-3, characterized in that it further comprises a resilient structure arranged between the needle cylinder (4) and the push rod (1).

5. Minimally invasive sampler for tissues for livestock according to claim 4, characterized in that the end of the push rod (1) close to the tail end of the needle cylinder (4) is provided with a snap ring (1-3), and the resilient structure comprises a spring (3) arranged between the snap ring (1-3) and the needle cylinder (4).

6. Minimally invasive sampler for tissues for livestock according to claim 5, characterized in that said snap ring (1-3) is located inside said needle cylinder (4) and comprises a first snap ring (1-3-a) near the tail end of said needle cylinder (4) and a second snap ring (1-3-b) near the head end of said needle cylinder (4), said spring (3) is sleeved on said push rod (1) and is located between said second snap ring (1-3-b) and the head end of said needle cylinder (4).

7. Minimally invasive sampler for livestock tissue according to any of claims 1-6, characterized in that the push rod (1) comprises a base rod (1-1) and a guide rod (1-2) which are arranged in succession along the direction of the central line, and the snap ring (1-3) is arranged on the guide rod (1-2).

8. Minimally invasive sampler for livestock tissue according to any of claims 1-7, characterized in that the snap ring (1-3) is snap-connected to the push rod (1).

9. Minimally invasive livestock tissue sampler according to any of claims 1-8, characterized in that it further comprises a stopper (6) arranged between the needle cylinder (4) and the trocar (5).

10. Minimally invasive sampler for livestock tissue according to any of claims 1-9, characterized in that the head end of the needle cylinder (4) is provided with a nipple (4-1).