Adjustable sampling needle
By designing an adjustable sampling needle, and utilizing the threaded connection between the outer tube and the mounting tube, as well as the spring button lever, synchronous operation of the needle core and the needle tube is achieved, solving the problem of cumbersome operation of existing sampling needles and improving sampling efficiency and quantity.
Patent Information
- Application Number
- CN202422312679.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The existing sampling needles have a coaxial needle core and needle tube, which requires the use of both hands in a crossed position, increasing the difficulty of use.
An adjustable sampling needle was designed. Through the threaded connection between the outer tube and the mounting tube, combined with the cooperation of the spring button rod and the adjustment rod, the needle core and the needle tube can be operated synchronously, which simplifies the sampling operation. The synchronous movement of the needle cores and the ring array design of the needle core, the cutting hole and the sampling groove improve the sampling efficiency.
It enables sampling to be completed with one hand, simplifies the operation process, improves the sampling volume and efficiency, and avoids the problem of secondary overlap caused by insufficient sampling.
Smart Images
Figure CN223569339U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to biological experiment equipment technical field especially, relates to a kind of adjustable sampling needle. BACKGROUND
[0002] Biological experiment sampling needle is a kind of tool specially used in biological experiment sampling, mainly used to obtain tissue, cell or other biological sample from organism, sampling needle is usually made of stainless steel or other corrosion-resistant materials to ensure that sample is not polluted or damaged during sampling process, the tip of sampling needle is designed in various types, such as conical, blade-shaped, needle-shaped, to adapt to different sampling requirements, biological experiment sampling needle has wide application in biology, agriculture and other fields, such as used to obtain tissue, cell or DNA sample from plant, animal or microorganism, in order to carry out genetic expression, proteomics, cell biology research, such as used to obtain tissue sample from crop or animal, in order to carry out genetic improvement, growth and development research, used to obtain microbial sample from soil, water sample and other environment, in order to carry out environmental microbiology research.
[0003] At present, sampling needle is usually composed of needle tube and needle core, which are connected with spring and base respectively, when sampling is needed, the two are first put into cooperation state, then the needle core is first inserted into the inside of sampling object, and then the needle tube enters to divide the object in the sampling groove of needle core, and then the needle core is reset to complete sampling work, but since the needle core and needle tube are coaxially arranged, and the needle core is located inside the needle tube, when sampling, manual cross-hand operation is needed, one side needs to be inserted into the inside of sampling object, and the other side needs to adjust the insertion of needle tube and needle core respectively, which is complicated and increases the difficulty of use.
[0004] Therefore, it is necessary to provide an adjustable sampling needle to solve the above technical problems. UTILITY MODEL CONTENT
[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an adjustable sampling needle to solve the problem that the needle core and needle tube are coaxially arranged, and the needle core is located inside the needle tube, so when sampling, manual cross-hand operation is needed, one side needs to be inserted into the inside of sampling object, and the other side needs to adjust the insertion of needle tube and needle core respectively, which is complicated and increases the difficulty of use.
[0006] To achieve the above purpose, the utility model adopts the following technical scheme:
[0007] An adjustable sampling needle comprises: an outer sleeve tube;
[0008] The outer sleeve is internally hollow, a threaded groove is formed in the inner wall of the right end of the outer sleeve, the outer sleeve is connected with the connecting rod of the mounting pipe through threaded engagement, a hole is formed in the inner part of the outer sleeve, a needle tube is inserted into the hole, the needle tube is internally hollow, the needle tube is mounted and connected with the left side of the connecting rod through a mounting plate, the needle tube and the mounting plate are both provided with a through hole, the left half of the sampling mechanism is insertedly connected with the through hole, and the rear half of the sampling mechanism is mounted in the inner part of the mounting pipe.
[0009] In one embodiment, the mounting pipe is internally hollow, and the circumferential surface of the upper end of the two sides of the mounting pipe is provided with an adjusting groove.
[0010] In one embodiment, a spring button rod is mounted below the adjusting groove, the telescopic end of the spring button rod penetrates the wall surface of the mounting pipe and extends into the inner part of the mounting pipe, and when the spring button rod is not pressed, the telescopic end is in the wall surface of the mounting pipe.
[0011] In one embodiment, the sampling mechanism is composed of a needle core, a fixed plate, a spring, an adjusting rod and a sampling groove, the right end of the needle core is mounted and connected with the fixed plate, the left end of the needle core penetrates the connecting rod, the mounting plate and the outer sleeve in sequence and extends to the left end port of the needle tube, the fixed plate is in the inner part of the mounting pipe, the right side of the fixed plate is connected with the inner right wall of the mounting pipe through a spring, the adjusting rod is mounted on the circumferential surface of the two sides of the fixed plate and extends to the outside through the adjusting groove, and the left end of the needle core is provided with a sampling groove.
[0012] In one embodiment, the port of the needle tube is arranged in an annular array and provided with four cutting ports, the sampling groove of the needle core is arranged in an annular array and provided with four sampling grooves, and the sampling grooves are arranged in one-to-one correspondence with the cutting ports, the left end of the needle core is provided with a sharp part, and the cutting port of the needle tube is located between the sharp part and the sampling groove.
[0013] The utility model discloses the following beneficial effects:
[0014] (1), the utility model discloses a manual hand holds installation pipe, and the thumb and the index finger extrude the spring button lever of both sides, and the telescopic end of spring button lever passes the outer wall of installation pipe, and the fixed plate is blocked, and the fixed plate and spring are in compression state under the blocking state, and the needle core and needle tube are in synchronous cooperation state at this time, and the inside of the object to be sampled is pricked, reaches the sampling area, and the spring button lever is loosened, and the other hand of artificial alternately holds installation pipe, and the operating hand pulls the adjusting lever, and under the reset state of spring, the adjusting lever is displaced towards needle tube, and the needle core is driven out of needle tube simultaneously, and is pricked into the inside of the sampling object, and makes the sampling groove exist sampling object, and then the adjusting lever is reset, and the sampling object is cut through needle tube port, and with the sampling groove retreating into the inside of needle tube, the spring button lever is pressed, and the fixed plate is limited, and the needle tube can be taken out to complete sampling work.
[0015] (2), the utility model discloses that the sampling groove is annular array and is provided with four, and is set up with cutting port one to one, and the cutting port of needle tube is between the sharp part and sampling groove, and through multiple cutting ports and multiple sampling grooves cooperation, under the structure limit of needle core small, as many as possible have the accommodation space, improve the number of sampling amount, avoid the operation problem of secondary insertion due to the insufficient sampling amount. DRAWINGS
[0016] Figure 1 It is the overall structural drawing of the utility model;
[0017] Figure 2 It is the detail drawing of the utility model after each component is split;
[0018] Figure 3 It is the detail drawing of the sampling mechanism of the utility model;
[0019] Figure 4 It is the detail drawing of the needle tube and needle core end of the utility model.
[0020] Among them, the name corresponding to the reference sign is: outer sleeve 1, installation pipe 2, connecting rod 21, adjusting groove 22, spring button lever 23, needle tube 3, mounting plate 31, through hole 32, cutting port 33, sampling mechanism 4, needle core 41, fixed plate 42, spring 43, adjusting rod 44, sampling groove 45. PREFERRED EMBODIMENT
[0021] The utility model is further explained in connection with the drawings and examples, and the mode of the utility model includes but is not limited to the following examples.
[0022] As Figures 1-2 The utility model provides an adjustable sampling needle, which comprises: outer sleeve 1, installation pipe 2, needle tube 3, sampling mechanism 4;
[0023] As Figures 1-2As shown, the outer sleeve 1 is internally hollow, a threaded groove is formed in the inner wall of the right end, the outer sleeve 1 is connected with the connecting rod 21 of the mounting pipe 2 through the threaded groove, a hole is formed in the inner part of the outer sleeve 1, a needle tube 3 is inserted into the hole, the needle tube 3 is hollow as a whole, the needle tube 3 is mounted and connected with the left side surface of the connecting rod 21 through a mounting plate 31, the needle tube 3 and the mounting plate 31 are both provided with a through hole 32, the through hole 32 is internally connected with the left half of the sampling mechanism 4 in a plug-in mode, the rear half of the sampling mechanism 4 is mounted in the inner part of the mounting pipe 2, in the working process, the mounting plate 31 is mounted and connected with the connecting rod 21, then the left half of the sampling mechanism 4 is inserted into the inner part of the needle tube 3, the outer sleeve 1 and the connecting rod 21 are tightened.
[0024] Preferably, in one embodiment, as shown in the drawings, Figures 1-2 As shown, the inner part of the mounting pipe 2 is hollow, the adjusting grooves 22 are formed in the circumferential surface of the upper end of the two sides of the mounting pipe 2, and the adjusting grooves 22 are rectangular structures as a whole.
[0025] Preferably, in one embodiment, as shown in the drawings, Figures 2-3 As shown, the spring button rod 23 is mounted below the adjusting groove 22, the telescopic end of the spring button rod 23 penetrates through the wall surface of the mounting pipe 2 and extends into the inner part of the mounting pipe 2, and when the spring button rod 23 is not pressed, the telescopic end is in the wall surface of the mounting pipe 2.
[0026] Preferably, in one embodiment, as shown in the drawings, Figures 2-3As shown, the sampling mechanism 4 is composed of a needle core 41, a fixed plate 42, a spring 43, an adjusting rod 44 and a sampling groove 45, the right end of the needle core 41 is connected with the fixed plate 42, the left end of the needle core 41 penetrates the connecting rod 21, the mounting plate 31 and the outer sleeve 1 in sequence and extends to the left end port of the needle tube 3, the fixed plate 32 is located in the inside of the mounting tube 2, the right side of the fixed plate 32 is connected with the inner right wall of the mounting tube 2 through the spring 43, the adjusting rod 44 is mounted on the upper side of the circumferential surface of the fixed plate 32, the extending end of the adjusting rod 44 penetrates the adjusting groove 22 and extends to the outside, the left end of the needle core 41 is provided with the sampling groove 45, in working, the mounting tube 2 is manually held, the thumb and the index finger squeeze the spring button rod 23 on the two sides, the spring button rod 23 penetrates the outer wall of the mounting tube 2, the fixed plate 42 is blocked, the fixed plate 42 and the spring 43 are in the compressed state in the blocking state, the needle core 41 and the needle tube 3 are in the synchronous cooperation state, the needle core 41 is inserted into the inside of the object to be sampled, when reaching the sampling area, the spring button rod 23 is released, the mounting tube 2 is alternately held by the other hand, the adjusting rod 44 is pulled, the adjusting rod 44 is displaced towards the needle tube 3 under the reset state of the spring 43, the needle core 41 is pulled out of the needle tube 3 and inserted into the inside of the sampling object, the sampling groove is provided with the sampling object, then the adjusting rod 44 is reset, the sampling object is cut through the port of the needle tube 3, the sampling groove 45 is retracted into the inside of the needle tube 3, the fixed plate 42 is limited by continuously pressing the spring button rod 23, the sampling work is completed by taking out the needle tube 3.
[0027] Preferably, in one embodiment, as Figure 4 As shown, the port of the needle tube 3 is arranged in an annular array and provided with four cutting ports 33, the sampling groove 45 of the needle core 41 is arranged in an annular array and provided with four cutting ports 33, the left end of the needle core 41 is provided with a sharp part, the cutting port 33 of the needle tube 3 is located between the sharp part and the sampling groove 45, through the cooperation of the plurality of cutting ports 33 and the plurality of sampling grooves 45, under the limitation of the small structure of the needle core 41, as many accommodation spaces as possible are provided, the sampling amount is increased, and the operation problem of secondary insertion caused by insufficient sampling amount is avoided.
[0028] The working principle of the utility model:
[0029] In working, by installing plate 31 with connecting rod 21 installation connection, then the left half of sampling mechanism 4 is inserted into needle tube 3 inside, the outer sleeve 1 is tightened with connecting rod 21, can be by artificial hand-held installation pipe 2, thumb and index finger extrude both sides spring button rod 23, make spring button rod 23 telescopic end pass through installation pipe 2 outer wall, block fixed plate 42, the fixed plate 42 in blocking state and spring 43 are in compression state, needle core 41 and needle tube 3 are in synchronous cooperation state at this time, pierce into the inside of the object to be sampled, reach sampling area, release spring button rod 23, artificial other hand alternately hold installation pipe 2, operation hand pulls regulation rod 44 by situation, in the reset state of spring 43, operation regulation rod 44 displacement towards needle tube 3 place, synchronous drive needle core 41 to extend needle tube 3, and pierce into the inside of the sampling object, make the existence of sampling object in sampling groove, then pull regulation rod 44 reset, sampling object is cut through needle tube 3 port, with sampling groove 45 retreat into needle tube 3 inside, continue to press spring button rod 23, make fixed plate 42 limit, take out needle tube 3 can complete sampling work.
[0030] The above embodiment is only one of the preferred embodiments of the present application, and should not be used to limit the protection scope of the present application, but any modification or polishing without substantial meaning made in the main design idea and spirit of the present application, the technical problems solved are still consistent with the present application, and should be included in the protection scope of the present application.
Claims
1. An adjustable sampling needle, characterized in that, include: Outer tube; The outer tube is hollow inside, with a threaded groove on the inner wall of its right end. The outer tube is threadedly connected to the connecting rod of the mounting tube through the threaded groove. The outer tube has a hole inside, into which a needle is inserted. The needle is hollow in shape and is connected to the left side of the connecting rod through a mounting plate. Both the needle and the mounting plate have through holes, which are inserted into the left half of the sampling mechanism. The rear half of the sampling mechanism is installed inside the mounting tube.
2. The adjustable sampling needle according to claim 1, characterized in that, The mounting tube is hollow inside, and adjustment grooves are provided on the upper circumference of both sides of the mounting tube. The adjustment grooves are rectangular in shape.
3. An adjustable sampling needle according to claim 2, characterized in that, A spring button rod is installed below the adjustment groove. The telescopic end of the spring button rod penetrates the wall of the mounting tube and extends into the interior of the mounting tube. When the spring button rod is not compressed, the telescopic end is inside the wall of the mounting tube.
4. An adjustable sampling needle according to claim 1, characterized in that, The sampling mechanism consists of a needle core, a fixing plate, a spring, an adjusting rod, and a sampling groove. The right end of the needle core is installed and connected to the fixing plate. The left end of the needle core passes through the connecting rod, the mounting plate, and the outer sleeve in sequence, and extends to the left end port of the needle tube. The fixing plate is located inside the mounting tube. The right side of the fixing plate is connected to the inner right wall of the mounting tube through the spring. Adjusting rods are installed on the upper sides of both circumferential surfaces of the fixing plate. The extended ends of the adjusting rods pass through the adjusting grooves and extend to the outside. A sampling groove is provided on the left end of the needle core.
5. An adjustable sampling needle according to claim 4, characterized in that, The needle tube has four cutting openings arranged in a ring array at its port. The needle core has four sampling slots arranged in a ring array, each corresponding to one of the cutting openings. The left end of the needle core has a pointed tip, and the cutting openings of the needle tube are located between the pointed tip and the sampling slots.