Puncture sampling device

Abstract

The invention discloses a puncture sampling device, and relates to the technical field of diagnosis and identification, the puncture sampling device comprises a hand-held cylinder, the hand-held cylinder is provided with a front end and a rear end, the front end of the hand-held cylinder is in threaded connection with a detachable front cover, the front end of the front cover is fixedly provided with a catheter, and the front end of the catheter is provided with an opening; a puncture needle used for assisting puncture is connected into the catheter in a sliding mode. In the process that the puncture sampling device is used for conducting puncture sampling operation, through mutual cooperation of the pushing assembly, the elastic assembly, the supporting assembly and the adjusting assembly, the puncture needle is supported in the radial direction, the puncture needle can stably move in the axial direction in the force storage puncture process, the accuracy of puncture sampling is guaranteed, and in the supporting process, the puncture needle can stably move in the axial direction. Through transmission, the puncture force is adaptively adjusted according to the outer diameter size of the puncture needle, puncture failure and high-speed puncture are avoided, and the puncture sampling effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of diagnosis and identification, in particular to a puncture sampling device. Background Art

[0002] A puncture sampling device is a professional device used to obtain biological tissues, body fluids or other samples by puncture, and is widely used in diagnosis and identification operations.

[0003] During the use of the puncture sampling device, in order to meet different puncture sampling needs, it is necessary to replace puncture needles of different diameters. When puncturing and sampling with puncture needles of different diameters, the puncture sampling device cannot adaptively adjust the puncture force according to the outer diameter of the puncture needle. When a large-diameter puncture needle is used for puncture, the larger the contact area between the puncture needle and the tissue, the more linearly the friction resistance increases. If the puncture force is too low, it will lead to the inability to penetrate dense tissue, resulting in puncture failure. When a small-diameter puncture needle is used for puncture, the puncture resistance becomes smaller. If the puncture force is too large, the puncture needle will puncture at high speed, causing cells to be damaged by shear force, affecting the effect of puncture sampling. For this reason, we propose a puncture sampling device. Summary of the Invention

[0004] The object of the present invention is to provide a puncture sampling device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a puncture sampling device, comprising a handheld barrel, the handheld barrel being provided with a front end and a rear end, the front end of the handheld barrel being threadedly connected to a detachable front cover, the front end of the front cover being fixed with a catheter, the interior of the catheter being slidably connected to a puncture needle for assisting puncture, and further comprising: A pushing assembly is provided inside the hand-held tube to assist in the telescopic driving of the puncture needle; An elastic component is provided inside the hand-held tube for providing elastic force to the puncture needle for puncture. The hand-held tube is provided with a limit component for assisting the puncture with accumulating force and an unlocking component for unlocking after accumulating force; A support assembly is provided inside the hand-held tube and is used to support the outer side of the puncture needle during the puncture process; And, an adjustment component is arranged between the support component and the elastic component and is used to adjust the elastic force of the elastic component according to the outer diameter of the puncture needle.

[0006] Preferably, the pushing assembly includes a push rod slidably connected to the rear end of the hand-held tube, one end of the push rod is located inside the hand-held tube and is fixed with a mounting plate, the other end of the push rod is located outside the hand-held tube and is fixed with a push plate, one side of the mounting plate is fixed with a mounting sleeve, and the end of the puncture needle and the mounting sleeve are detachably mounted by means of a thread; By adopting the above technical solution, the puncture needle can be pushed, contracted and pulled.

[0007] Preferably, the elastic component includes a fixing ring fixed inside the hand-held tube, and a first retaining ring and a second retaining ring are respectively provided on one side of the fixing ring facing the rear end and the front end of the hand-held tube, the second retaining ring is fixed inside the hand-held tube and is used to limit the mounting plate during the puncture movement, the first retaining ring is slidably connected to the inside of the hand-held tube, and the push rod is slidably connected to the first retaining ring, the outer side of the push rod is sleeved with a first spring, and the two ends of the first spring are respectively set to resist the first retaining ring and the mounting plate; By adopting the above technical solution, it is convenient to assist the contraction and accumulation of force of the puncture needle.

[0008] Preferably, the support assembly is provided with multiple groups, and the multiple groups of support assemblies are arranged in a state of an annular array inside the hand-held tube, the support assembly includes a fixing plate, the fixing plate is connected and fixed to the inner wall of the hand-held tube by multiple groups of fixing rods, a mounting plate is provided below the fixing plate, a first telescopic assembly for assisting the telescopic connection of the mounting plate is provided between the mounting plate and the fixing plate, and a support rod for pressing and supporting the outer side of the puncture needle is fixed to the lower end of the mounting plate; By adopting the above technical solution, the puncture needle is radially supported, so that the puncture needle can move stably along the axial direction during the power accumulation puncture process, thereby ensuring the accuracy of puncture sampling. After one end of the puncture needle is installed on the mounting plate, the front cover is installed and connected to the front end of the handheld tube. During the installation process, the puncture needle is passed through the catheter of the front cover.

[0009] Preferably, the adjustment assembly includes a strip plate, the mounting plate is provided with a transmission assembly for transmitting the strip plate, the fixed plate is provided with a guide assembly for guiding the strip plate during transmission, one side of the strip plate is fixedly connected to a mounting block, the second retaining ring and the fixed ring are slidably connected to an adjustment rod, and both ends of the adjustment rod are respectively fixed to the first retaining ring and the mounting block; By adopting the above technical solution, the compression deformation of the first spring during the limit force storage process is adjusted.

[0010] Preferably, the transmission assembly is provided with two groups, and the two groups of transmission assemblies are symmetrically arranged on both sides of the fixed plate, the transmission assembly includes a transmission plate arranged on one side of the fixed plate, the transmission plate and the mounting plate are connected and fixed by a connecting rod, an inclined groove is provided on the transmission plate, a transmission pin is slidably connected to the inclined groove, and one end of the transmission pin is fixed to one side of the strip plate; By adopting the above technical solution, the strip plate is driven to move under force. During the movement of the strip plate, the connection between the mounting block and the adjusting rod causes the adjusting rod to pull the first retaining ring toward the limiting assembly.

[0011] Preferably, the guide assembly comprises a plurality of groups of T-shaped rods slidably connected to the strip plate, a fixing block is fixed to the fixing plate, and one end of the T-shaped rod is fixed to the fixing block; By adopting the above technical solution, the movement guidance of the strip plate after being subjected to force is assisted.

[0012] Preferably, the first telescopic assembly includes two groups of first sleeves symmetrically fixed to the lower end of the fixed plate, the two groups of first sleeves are slidably connected to a first slide rod, one end of the first slide rod is fixed to the mounting plate, a second spring is sleeved on the outer side of the first sleeve, and the two ends of the second spring are respectively set to abut against the mounting plate and the fixed plate; By adopting the above technical solution, the telescopic guide between the auxiliary fixing plate and the mounting plate is assisted, and the second spring is used to assist in resetting the mounting plate after the telescopic movement.

[0013] Preferably, the limiting assembly is arranged between the fixing ring and the first retaining ring, and two groups of the limiting assembly are symmetrically arranged inside the hand-held tube. The limiting assembly includes a connecting plate, and the front side of the connecting plate is connected to a limiting plate for limiting the position of the mounting plate through a second telescopic assembly. One side of the limiting plate is provided with an inclined surface for abutting the mounting plate for transmission; By adopting the above technical solution, it is convenient to limit the installation disk and the puncture needle after being pulled.

[0014] The second telescopic assembly includes a plurality of second sleeves fixed to the connecting plate, a second slide rod is slidably connected to the second sleeve, one end of the second slide rod is fixed to the connecting plate, a third spring is sleeved on the outer side of the second sleeve, and two ends of the third spring are respectively set against the connecting plate and the limit plate; By adopting the above technical solution, the telescopic connection between the auxiliary connecting plate and the limiting plate is facilitated, and the limiting plate can be reset after the contraction movement through the third spring.

[0015] Preferably, the unlocking assembly includes a mounting rod fixed to the connecting plate, and a cylinder for driving the mounting rod is installed on the outer side of the hand-held tube; By adopting the above technical solution, the limit can be quickly released.

[0016] Compared with the prior art, the present invention has the following beneficial effects: During the puncture sampling operation using the puncture sampling device of the present invention, the puncture needle is radially supported by the mutual cooperation of the pushing component, the elastic component, the supporting component and the adjusting component, so that the puncture needle can move stably along the axial direction during the force accumulation puncture process, thereby ensuring the accuracy of puncture sampling. In addition, during the support process, the puncture force can be adaptively adjusted according to the outer diameter size of the puncture needle through transmission, thereby avoiding puncture failure and high-speed puncture, and ensuring the effect of puncture sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall appearance structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the handheld tube of the present invention; Figure 3 This is a schematic diagram of the support assembly before the puncture needle of the present invention is installed; Figure 4 It is a schematic structural diagram of the pushing component and the elastic component of the present invention; Figure 5 This is a schematic diagram of the present invention before and after the puncture needle is charged; Figure 6 It is a schematic structural diagram of the limiting assembly, the second telescopic assembly and the unlocking assembly of the present invention; Figure 7 It is a schematic structural diagram of the support assembly and the first telescopic assembly of the present invention; Figure 8 It is a schematic structural diagram of the adjustment assembly, guide assembly and transmission assembly of the present invention; Figure 9 Schematic diagram of the height difference and movement difference of the strip plate after the puncture needles with different diameters are supported in the present invention; Figure 10 This is a schematic diagram of the state of the present invention when puncture needles with different diameters are storing force.

[0018] In the figure: 101-handheld tube; 102-front cover; 103-catheter; 104-puncture needle; 201-push rod; 202-mounting plate; 203-push plate; 204-mounting sleeve; 301-fixing ring; 302-first retaining ring; 303-second retaining ring; 304-first spring; 401-connecting plate; 402-limiting plate; 403-inclined surface; 501-second sleeve; 502-second slide rod; 503-third spring; 6 01-cylinder; 602-mounting rod; 701-fixing plate; 702-fixing rod; 703-mounting plate; 704-support rod; 801-first sleeve; 802-first slide rod; 803-second spring; 901-strip plate; 902-mounting block; 903-adjusting rod; 1001-T-bar; 1002-fixing block; 1101-transmission plate; 1102-connecting rod; 1103-bevel groove; 1104-transmission pin. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1 See also Figure 1-10 The puncture sampling device shown in the figure includes a handheld tube 101, which is provided with a front end and a rear end. The front end of the handheld tube 101 is threadedly connected to a detachable front cover 102, the front end of the front cover 102 is fixed with a catheter 103, and the interior of the catheter 103 is slidably connected to a puncture needle 104 for assisting puncture. The device also includes: A pushing assembly is provided inside the hand-held tube 101 and is used to assist in the telescopic driving of the puncture needle 104; The elastic component is provided inside the hand-held tube 101 and is used to provide elastic force for the puncture needle 104 to store force for puncture. The hand-held tube 101 is provided with a limit component for assisting the puncture with stored force and an unlocking component for unlocking after the force is stored; A support assembly is provided inside the hand-held tube 101 and is used to support the outer side of the puncture needle 104 during the puncture process; and, an adjusting component disposed between the supporting component and the elastic component for adjusting the elastic force of the elastic component according to the outer diameter of the puncture needle 104; It should be noted here that: in the process of using the puncture sampling device for puncture sampling operations, the puncture needle 104 is radially supported through the mutual cooperation of the pushing component, the elastic component, the supporting component and the adjusting component, so that the puncture needle 104 can move stably along the axial direction during the force accumulation puncture process, thereby ensuring the accuracy of the puncture sampling, and in the process of support, through transmission, the puncture force is adaptively adjusted according to the outer diameter size of the puncture needle 104, thereby avoiding puncture failure and high-speed puncture, and ensuring the effect of puncture sampling.

[0021] Preferably, the pushing assembly includes a push rod 201 slidably connected to the rear end of the hand-held cylinder 101, one end of the push rod 201 is located inside the hand-held cylinder 101 and is fixed with a mounting plate 202, the other end of the push rod 201 is located outside the hand-held cylinder 101 and is fixed with a push plate 203, one side of the mounting plate 202 is fixed with a mounting sleeve 204, and the end of the puncture needle 104 is detachably mounted to the mounting sleeve 204 by means of a thread; It should be noted here that the puncture needle 104 can be pushed and retracted by the pushing component.

[0022] Preferably, the elastic component includes a fixing ring 301 fixed to the inside of the hand-held tube 101, and a first stop ring 302 and a second stop ring 303 are respectively provided on one side of the fixing ring 301 facing the rear end and the front end of the hand-held tube 101. The second stop ring 303 is fixed to the inside of the hand-held tube 101 and is used to limit the mounting plate 202 during the puncture movement. The first stop ring 302 is slidably connected to the inside of the hand-held tube 101, and the push rod 201 is slidably connected to the first stop ring 302. The outer side of the push rod 201 is provided with a first spring 304, and the two ends of the first spring 304 are respectively set to resist the first stop ring 302 and the mounting plate 202; It should be noted here that the elastic component and the limiting component cooperate with each other to assist in the contraction and accumulation of force of the puncture needle 104.

[0023] Preferably, multiple groups of support assemblies are provided, and the multiple groups of support assemblies are arranged in a circular array inside the hand-held tube 101. The support assembly includes a fixing plate 701, and the fixing plate 701 is connected and fixed to the inner wall of the hand-held tube 101 by multiple groups of fixing rods 702. A mounting plate 703 is provided below the fixing plate 701. A first telescopic assembly for assisting the telescopic connection of the mounting plate 703 is provided between the mounting plate 703 and the fixing plate 701. A support rod 704 for pressing and supporting the outer side of the puncture needle 104 is fixed to the lower end of the mounting plate 703; It should be noted here that: during the installation of the puncture needle 104, the front cover 102 is removed from the front end of the hand-held tube 101. After the removal is completed, the mounting plate 703 on each group of support components is retracted and pushed toward the fixed plate 701, so that one end of the puncture needle 104 can pass through between the support rods 704 of each group of support components and be installed and connected to the mounting sleeve 204 of the mounting disk 202. After the puncture needle 104 is installed and connected, the retraction push of the mounting plate 703 is released and the elastic force of the second spring 803 on the first telescopic component is used to push the mounting plate 703 to reset. During the reset process , so that each group of support rods 704 on the mounting plate 703 is against the outer side of the installed puncture needle 104. Through the mutual action of multiple groups of support rods 704 on each group of mounting plates 703 and the outer sides of the puncture needle 104, the puncture needle 104 is radially supported, so that the puncture needle 104 can move stably along the axial direction during the force accumulation puncture process, thereby ensuring the accuracy of puncture sampling. After one end of the puncture needle 104 is installed on the mounting disk 202, the front cover 102 is installed and connected to the front end of the handheld tube 101. During the installation process, the puncture needle 104 is passed through the catheter 103 of the front cover 102.

[0024] Preferably, the adjustment assembly includes a strip plate 901, a transmission assembly for transmitting the strip plate 901 is provided on the mounting plate 703, a guide assembly for guiding the strip plate 901 during transmission is provided on the fixed plate 701, a mounting block 902 is fixedly connected to one side of the strip plate 901, an adjustment rod 903 is slidably connected to the second retaining ring 303 and the fixed ring 301, and both ends of the adjustment rod 903 are fixed to the first retaining ring 302 and the mounting block 902 respectively; It should be noted here that: through transmission, the adjusting rod 903 pulls the first baffle ring 302 toward the limiting assembly, and the pulling amplitude of the first baffle ring 302 increases synchronously with the increase in the diameter of the puncture needle 104. In the process of pulling the first baffle ring 302, the distance between the first baffle ring 302 and the limiting assembly is reduced, thereby increasing the compression deformation of the first spring 304 during the limiting force storage process.

[0025] Preferably, two transmission assemblies are provided, and the two transmission assemblies are symmetrically arranged on both sides of the fixed plate 701. The transmission assembly includes a transmission plate 1101 provided on one side of the fixed plate 701. The transmission plate 1101 is connected and fixed to the mounting plate 703 via a connecting rod 1102. The transmission plate 1101 is provided with an inclined groove 1103. A transmission pin 1104 is slidably connected to the inclined groove 1103. One end of the transmission pin 1104 is fixed to one side of the strip plate 901. It should be noted here that: during the process of the mounting plate 703 shrinking toward the fixed plate 701, the transmission plate 1101 is driven to move synchronously through the connecting action of the connecting rod 1102. During the movement of the transmission plate 1101, the interaction between the inclined groove 1103 and the transmission pin 1104 drives the strip plate 901 to move under force. During the movement of the strip plate 901, the connection between the mounting block 902 and the adjusting rod 903 causes the adjusting rod 903 to pull the first retaining ring 302 toward the limiting assembly.

[0026] Preferably, the guide assembly includes a plurality of groups of T-shaped rods 1001 slidably connected to the strip plate 901, a fixing block 1002 is fixed to the fixing plate 701, and one end of the T-shaped rod 1001 is fixed to the fixing block 1002; It should be noted here that the fixed block 1002 and the multiple groups of T-shaped rods 1001 assist in guiding the movement of the strip plate 901 after it is subjected to force.

[0027] Preferably, the first telescopic assembly includes two groups of first sleeves 801 symmetrically fixed to the lower end of the fixed plate 701, and the two groups of first sleeves 801 are slidably connected to the first slide rod 802, one end of the first slide rod 802 is fixed to the mounting plate 703, and the outer side of the first sleeve 801 is sleeved with a second spring 803, and the two ends of the second spring 803 are respectively set to abut against the mounting plate 703 and the fixed plate 701; It should be noted that the first sleeve 801 and the first slide bar 802 assist in the telescopic guidance between the fixing plate 701 and the mounting plate 703 , and the second spring 803 assists in resetting the mounting plate 703 after the telescopic movement.

[0028] Example 2 See also Figure 6 This embodiment further illustrates the first embodiment. The limiting assembly shown in the figure is disposed between the fixing ring 301 and the first retaining ring 302. Two groups of limiting assemblies are symmetrically disposed inside the hand-held tube 101. The limiting assembly includes a connecting plate 401. The front side of the connecting plate 401 is connected to a limiting plate 402 for abutting against the mounting plate 202 via a second telescopic assembly. One side of the limiting plate 402 is provided with an inclined surface 403 for abutting against the mounting plate 202. It should be noted here that: in the process of pulling the mounting plate 202, the mounting plate 202 is abutted against the inclined surface 403 on the limiting plate 402. In the process of abutting against each other, the limiting plate 402 is pushed toward the connecting plate 401 for contraction movement. As the mounting plate 202 continues to move, when the mounting plate 202 passes over the limiting plate 402, the limiting plate 402 is reset through the second telescopic component, and the mounting plate 202 is blocked and limited by the reset limiting plate 402.

[0029] The second telescopic assembly includes multiple sets of second sleeves 501 fixed to the connecting plate 401. A second slide bar 502 is slidably connected to the second sleeve 501. One end of the second slide bar 502 is fixed to the connecting plate 401. A third spring 503 is sleeved on the outer side of the second sleeve 501. The two ends of the third spring 503 are respectively arranged to abut against the connecting plate 401 and the limit plate 402. It should be noted here that the second sleeve 501 and the second slide rod 502 facilitate the telescopic connection between the auxiliary connecting plate 401 and the limiting plate 402, and the third spring 503 facilitates the reset of the limiting plate 402 after the contraction movement.

[0030] Preferably, the unlocking assembly includes a mounting rod 602 fixed to the connecting plate 401, and a cylinder 601 for driving the mounting rod 602 is installed on the outer side of the hand-held cylinder 101; It should be noted that when unlocking is required, the cylinder 601 is used to pull the mounting rod 602. During the pulling process, the connecting plate 401 and the limiting plate 402 are retracted so that the limiting plate 402 no longer presses against the mounting plate 202, thereby releasing the limit. It is worth noting here that the cylinder 601 is a conventional telescopic drive component, and its working principle and operation method are regarded as conventional technical means in this application, and will not be elaborated here.

[0031] In this solution: a puncture sampling device includes the following steps: When the puncture sampling device is used for puncture sampling, the puncture needle 104 installed on the mounting plate 202 is retracted toward the inside of the hand-held tube 101 through the pulling action of the push plate 203 and the push rod 201. The front end of the puncture needle 104 is located inside the catheter 103 through the retraction action. In the process of pulling the mounting plate 202, the mounting plate 202 is restrained and limited by the limiting component during the pulling and retraction process. In the process of retracting and pulling the mounting plate 202, the first spring 304 is deformed by the force to generate elastic force, which accumulates force for the subsequent puncture of the puncture needle 104. After the puncture needle 104 is retracted and the force is accumulated, the puncture needle 104 is retracted and released. The hand-held cylinder 101 is used to push the catheter 103 to the position to be punctured and sampled. After the puncture is completed, the unlocking component is used to release the limit of the mounting plate 202. At this time, the puncture needle 104 on the mounting plate 202 is pulled out from the catheter 103 under the elastic force of the first spring 304 and punctured into the position to be punctured and sampled, so that part of the tissue at this position remains inside the puncture needle 104. After the puncture is completed, the puncture needle 104 is retracted into the catheter 103 again. The shielding effect of the catheter 103 on the puncture needle 104 prevents the puncture needle 104 from being affected by other tissues during the removal process, and the puncture sampling is completed. During the puncture sampling process, according to the sampling needs, it is necessary to replace and install the puncture needle 104 of different outer diameters. During the installation of the puncture needle 104, the front cover 102 is removed from the front end of the hand-held tube 101. After the removal is completed, the mounting plate 703 on each group of support components is retracted and pushed toward the fixed plate 701, so that one end of the puncture needle 104 can pass through between the support rods 704 of each group of support components and be installed and connected to the mounting sleeve 204 of the mounting disk 202. After the puncture needle 104 is installed and connected, the retraction push of the mounting plate 703 is released and the elastic force of the second spring 803 on the first telescopic component is used to push the mounting plate 703 to the fixed plate 701. 03 is reset. During the resetting process, the groups of support rods 704 on the mounting plate 703 are abutted against the outer side of the installed puncture needle 104. Through the abutment between the multiple groups of support rods 704 on each mounting plate 703 and the outer sides of the puncture needle 104, the puncture needle 104 is radially supported, so that the puncture needle 104 can move stably along the axial direction during the power accumulation puncture process, thereby ensuring the accuracy of puncture sampling. After one end of the puncture needle 104 is installed on the mounting plate 202, the front cover 102 is installed and connected to the front end of the hand-held tube 101. During the installation process, the puncture needle 104 is passed through the catheter 103 of the front cover 102; When the mounting plates 703 are reset so that the support rods 704 abut against the outer sides of the puncture needles 104, the mounting plates 703 may shrink differently for puncture needles 104 of different diameters during the reset process (see FIG. Figure 9 ), the larger the outer diameter of the puncture needle 104 is, the more the mounting plate 703 will be retracted toward the fixed plate 701 due to the size of the puncture needle 104. In the process of the mounting plate 703 retracting toward the fixed plate 701, the connecting action of the connecting rod 1102 drives the transmission plate 1101 to move synchronously. In the process of the transmission plate 1101 moving, the interaction between the inclined slot 1103 and the transmission pin 1104 drives the strip plate 901 to move under force. In the process of the movement of the strip plate 901, the connection between the mounting block 902 and the adjusting rod 903 causes the adjusting rod 903 to pull the first baffle ring 302 toward the limit assembly, and the pulling amplitude of the first baffle ring 302 increases synchronously with the increase in the diameter of the puncture needle 104. In the process of pulling the first baffle ring 302, the distance between the first baffle ring 302 and the limit assembly is reduced, thereby increasing the compression deformation of the first spring 304 during the limit force storage process (see FIG. 2 ). Figure 10 ), therefore, in summary, the effect of limiting force storage is improved synchronously with the increase of the outer diameter of the puncture needle 104, so that the puncture force can be adaptively adjusted according to the outer diameter of the puncture needle 104, avoiding puncture failure and high-speed puncture, and ensuring the effect of puncture sampling.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A puncture sampling device comprising: A handheld tube (101), the handheld tube (101) being provided with a front end and a rear end, the front end of the handheld tube (101) being threadedly connected to a detachable front cover (102), the front end of the front cover (102) being fixed with a catheter (103), the interior of the catheter (103) being slidably connected to a puncture needle (104) for assisting puncture; It is characterized by further comprising: A pushing assembly, disposed inside the hand-held tube (101) and used to assist in telescopically driving the puncture needle (104); An elastic component is arranged inside the hand-held tube (101) and is used to provide elastic force to the puncture needle (104) for puncturing with stored force. The hand-held tube (101) is provided with a limit component for assisting the stored force puncture and an unlocking component for unlocking after the stored force is released. A support assembly, disposed inside the handheld tube (101) and used to support the outside of the puncture needle (104) during the puncture process; And, an adjustment component is provided between the support component and the elastic component and is used to adjust the elastic force of the elastic component according to the outer diameter of the puncture needle (104).

2. A puncture sampling device according to claim 1, characterized in that: The pushing assembly comprises a push rod (201) slidably connected to the rear end of the hand-held tube (101), one end of the push rod (201) is located inside the hand-held tube (101) and is fixed with a mounting plate (202), the other end of the push rod (201) is located outside the hand-held tube (101) and is fixed with a push plate (203), a mounting sleeve (204) is fixed to one side of the mounting plate (202), and the end of the puncture needle (104) and the mounting sleeve (204) are detachably mounted by means of a thread.

3. The puncture sampling device according to claim 2, characterized in that: The elastic component comprises a fixing ring (301) fixed inside the hand-held tube (101), a first retaining ring (302) and a second retaining ring (303) are respectively provided on one side of the fixing ring (301) facing the rear end and the front end of the hand-held tube (101), the second retaining ring (303) is fixed inside the hand-held tube (101) and is used to limit the mounting plate (202) during the puncture movement, the first retaining ring (302) is slidably connected to the inside of the hand-held tube (101), and the push rod (201) is slidably connected to the first retaining ring (302), the outer side of the push rod (201) is provided with a first spring (304), and the two ends of the first spring (304) are respectively arranged to resist the first retaining ring (302) and the mounting plate (202).

4. The puncture sampling device according to claim 3, characterized in that: The support assembly is provided in multiple groups, and the multiple groups of support assemblies are arranged in a circular array inside the hand-held tube (101), and the support assembly includes a fixed plate (701), and the fixed plate (701) is connected and fixed to the inner wall of the hand-held tube (101) by multiple groups of fixing rods (702). A mounting plate (703) is provided below the fixing plate (701), and a first telescopic assembly for assisting the telescopic connection of the mounting plate (703) is provided between the mounting plate (703) and the fixing plate (701). A support rod (704) for pressing and supporting the outer side of the puncture needle (104) is fixed at the lower end of the mounting plate (703).

5. The puncture sampling device according to claim 4, characterized in that: The adjustment assembly comprises a strip plate (901), a transmission assembly for transmitting the strip plate (901) is provided on the mounting plate (703), a guide assembly for guiding the strip plate (901) during transmission is provided on the fixed plate (701), a mounting block (902) is fixedly connected to one side of the strip plate (901), an adjustment rod (903) is slidably connected to the second retaining ring (303) and the fixed ring (301), and two ends of the adjustment rod (903) are respectively fixed to the first retaining ring (302) and the mounting block (902).

6. The puncture sampling device according to claim 5, characterized in that: The transmission assembly is provided in two groups, and the two groups of transmission assemblies are symmetrically arranged on both sides of the fixed plate (701). The transmission assembly includes a transmission plate (1101) arranged on one side of the fixed plate (701), and the transmission plate (1101) is connected and fixed to the mounting plate (703) via a connecting rod (1102). The transmission plate (1101) is provided with an inclined groove (1103), and a transmission pin (1104) is slidably connected to the inclined groove (1103). One end of the transmission pin (1104) is fixed to one side of the strip plate (901).

7. The puncture sampling device according to claim 5, characterized in that: The guide assembly comprises a plurality of groups of T-shaped rods (1001) slidably connected to the strip plate (901), a fixing block (1002) is fixed on the fixing plate (701), and one end of the T-shaped rod (1001) is fixed to the fixing block (1002).

8. The puncture sampling device according to claim 4, characterized in that: The first telescopic assembly includes two groups of first sleeves (801) symmetrically fixed to the lower end of the fixed plate (701), and the two groups of first sleeves (801) are slidably connected to the first slide rod (802), one end of the first slide rod (802) is fixed to the mounting plate (703), and the outer side of the first sleeve (801) is provided with a second spring (803), and the two ends of the second spring (803) are respectively set to abut against the mounting plate (703) and the fixed plate (701).

9. The puncture sampling device according to claim 3, characterized in that: The limiting assembly is arranged between the fixing ring (301) and the first retaining ring (302), and two groups of the limiting assembly are symmetrically arranged inside the hand-held tube (101). The limiting assembly includes a connecting plate (401), and the front side of the connecting plate (401) is connected to a limiting plate (402) for limiting the position of the mounting plate (202) through a second telescopic assembly. One side of the limiting plate (402) is provided with an inclined surface (403) for transmitting against the mounting plate (202); The second telescopic assembly includes a plurality of second sleeves (501) fixed on the connecting plate (401), a second slide bar (502) is slidably connected to the second sleeve (501), one end of the second slide bar (502) is fixed to the connecting plate (401), and a third spring (503) is sleeved on the outer side of the second sleeve (501), and two ends of the third spring (503) are respectively arranged to abut against the connecting plate (401) and the limit plate (402).

10. The puncture sampling device according to claim 9, characterized in that: The unlocking assembly comprises a mounting rod (602) fixed on the connecting plate (401), and a cylinder (601) for driving the mounting rod (602) is installed on the outer side of the hand-held cylinder (101).

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