Sampler for medical examination

Abstract

The utility model provides a sampler for medical examination. The sampler comprises a barrel with a cylindrical inner cavity, the needle head is arranged at the lower part of the cylinder body, and the needle head is communicated with the inner cavity of the cylinder body; the piston rod is connected to the inner cavity of the cylinder body in a sliding mode, and the piston rod slides to enable the inner cavity of the cylinder body to generate negative pressure or positive pressure; by rotating the threaded sleeve, the threaded sleeve rotates to drive the cushion block to move, the cushion block moves, the exposed length of the needle head is adjusted, then the needle head can be punctured into the whole, the cushion block makes contact with the outer wall of the whole, and therefore the needle head cannot continue to be punctured into the whole through limitation of the cushion block, and the needle head can be punctured into the whole. And through a clamping assembly, the movement of the cushion block is limited by the clamping assembly, so that the situation that the cushion block moves due to the fact that an operator mistakenly touches the threaded sleeve is prevented, and errors of the length of the needle penetrating into the whole are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of medical apparatus and instruments, in particular to a sampler for medical examination. BACKGROUND

[0002] Medical examination is a subject of using modern physical and chemical methods and means to carry out medical diagnosis, mainly studies how to provide basis for clinical diagnosis and treatment through laboratory technology and medical instrument equipment, the subject requires using various photoelectric instruments and chemical reagents to complete experimental analysis, in order to facilitate sample collection to the inspection object, will use the sampler for medical examination.

[0003] The existing sampler for medical examination is usually through the syringe to suck the sample into the injection pipe, and the sampling needle of the existing sampler cannot be quantitatively pierced into the whole body only by the experience and hand feeling operation of the user, which is easy to cause the sampling needle to be pierced too deep or too shallow, thereby leading to the deviation of the sampling needle. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a sampler for medical examination.

[0005] The utility model provides the following technical scheme: a sampler for medical examination, including the cylinder with the inner chamber shape is cylindrical, the needle head is arranged in the lower part of the cylinder, the needle head is communicated with the inner chamber of the cylinder, the piston rod is slidably connected in the inner chamber of the cylinder, the piston rod is slid, and the inner chamber of the cylinder generates negative pressure or positive pressure, and the positioning assembly is arranged on the cylinder, and the positioning assembly is used for adjusting the length of the needle head exposed outside, the positioning assembly includes the threaded sleeve connected with the outer wall of the cylinder, the cushion block is slidably connected with the outer wall of the cylinder, and the cushion block is rotatably connected with the threaded sleeve, the sampler further includes the detent assembly for limiting the sliding of the cushion block, the threaded sleeve is rotated to drive the cushion block to slide, and the length of the needle head exposed is adjusted.

[0006] Further, the positioning assembly further includes the first stopper and the second stopper arranged on the cylinder, and the threaded sleeve is located between the first stopper and the second stopper.

[0007] Further, the cushion block is in the shape of a circular ring, and a plurality of square through holes are arranged in the form of an annular array along the axis of the cushion block.

[0008] Further, a vertical one-way sliding slot is formed in the outer wall of the cylinder, and the cylinder is slidably connected with the cushion block through the sliding slot.

[0009] Further, the clamping assembly comprises a sliding rod connected to the cushion block in a sliding mode, and a plurality of recess holes formed in the cylinder body in a vertical direction, the sliding rod is clamped into the recess holes, thereby limiting the sliding of the cushion block.

[0010] Further, the clamping assembly further comprises a spring arranged between the cushion block and the sliding rod, and the spring is sleeved on the outer wall of the sliding rod.

[0011] Further, the clamping assembly further comprises a rotating shaft connected to the cushion block in a rotating mode, a baffle arranged on the rotating shaft, and a contact block arranged on the sliding rod.

[0012] Further, the clamping assembly comprises a threaded rod connected to the cushion block in a threaded mode, a knob arranged on the end of the threaded rod away from the cylinder body, and the threaded rod is abutted against the outer wall of the cylinder body, thereby limiting the sliding of the cushion block.

[0013] Further, the clamping assembly further comprises a plurality of recess holes formed in the cylinder body in a vertical direction, and the threaded rod is clamped into the recess holes, thereby limiting the sliding of the cushion block.

[0014] The utility model discloses beneficial effects that: through rotating the threaded sleeve, the threaded sleeve rotation drives the cushion block to move, the cushion block moves and adjusts the length that needle head exposes, after adjusting the length that needle head exposes, can stab the needle head into the general body, and make the cushion block and the outer wall of general body contact, thereby through the restriction of the cushion block, needle head will not continue to stab into the general body, thereby reach the effect that needle head quantitative stab into the general body, and through the clamping assembly, make the clamping assembly limit the cushion block and move, thereby prevent the operation person from mistake touch the threaded sleeve, lead to the cushion block and move, avoid the length that needle head stab into the general body produces error. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0016] Figure 2 It is the three-dimensional structure schematic diagram of the utility model support mechanism and cylinder body separation.

[0017] Figure 3 It is the three-dimensional structure schematic diagram of the utility model first embodiment clamping assembly.

[0018] Figure 4 It is the three-dimensional structure schematic diagram of the utility model second embodiment clamping assembly.

[0019] The labels in the attached diagram are as follows: 1-cylinder, 2-piston rod, 3-needle, 4-threaded sleeve, 5-pad, 6-through hole, 7-positioning assembly, 71-slide rod, 72-recessed hole, 73-spring, 74-contact block, 75-rotating shaft, 76-baffle, 77-threaded rod, 78-knob, 8-slide groove, 9-first stop, 10-second stop. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figures 1-3 The first embodiment of this utility model is shown, which provides a sampler for medical testing, including a cylindrical body 1 with a cylindrical inner cavity; a needle 3 disposed at the lower part of the cylindrical body 1, the needle 3 communicating with the inner cavity of the cylindrical body 1; a piston rod 2 slidably connected to the inner cavity of the cylindrical body 1, sliding the piston rod 2 to generate negative or positive pressure in the inner cavity of the cylindrical body 1; and a positioning component disposed on the cylindrical body 1, the positioning component being used to adjust the length of the needle 3 protruding externally; the positioning component includes a threaded sleeve 4 threadedly connected to the outer wall of the cylindrical body 1, and a pad 5 slidably connected to the outer wall of the cylindrical body 1, the pad 5 being rotatably connected to the threaded sleeve 4; the sampler also includes a locking component 7 for restricting the sliding of the pad 5; rotating the threaded sleeve 4 causes the pad 5 to slide, thereby adjusting the length of the needle 3 protruding; a vertical slot 8 is formed on the outer wall of the cylindrical body 1, the cylindrical body 1 being slidably connected to the pad 5 through the slot 8.

[0024] It can be understood that when the operator needs to take a sample, first, the operator adjusts the length of the needle 3 exposed outside according to the depth of the needle 3 needed to be inserted into the overall body. Specifically, the operator can rotate the threaded sleeve 4 in the forward direction, which drives the pad 5 to move downward, and the downward movement of the pad 5 will reduce the length of the needle 3 exposed. When the operator rotates the threaded sleeve 4 in the reverse direction, the threaded sleeve 4 will drive the pad 5 to move upward, thereby increasing the length of the needle 3 exposed. After adjusting the length of the needle 3 exposed, the operator can operate the detent assembly 7 to limit the movement of the pad 5, thereby preventing the operator from accidentally touching the threaded sleeve 4 and causing the pad 5 to move. Then, the operator can insert the needle 3 into the overall body and make the pad 5 contact the outer wall of the overall body. Thus, through the limitation of the pad 5, the needle 3 will not continue to be inserted into the overall body, thereby achieving the effect of the needle 3 being quantitatively inserted into the overall body. After the needle 3 is inserted into the overall body, the operator can pull the piston rod 2, which moves to generate negative pressure in the barrel 1, thereby sucking the sample in the overall body into the barrel 1. Then, the operator can pull the needle 3 out of the overall body. The overall body is the lump site of the patient, and the sample is the diseased cells of the lump site of the patient. The overall body can also be a living body, and the sample can be blood cells in the living body, etc.

[0025] As shown in Figure 2 , the positioning assembly further includes a first stop block 9 and a second stop block 10 arranged on the barrel 1, and the threaded sleeve 4 is located between the first stop block 9 and the second stop block 10.

[0026] It can be understood that when the threaded sleeve 4 drives the pad 5 to move, when the threaded sleeve 4 contacts the first stop block 9, the pad 5 will move upward to the limit position, and when the threaded sleeve 4 rotates to contact the second stop block 10, the pad 5 will move to the limit position on the downside. Thus, through the action of the first stop block 9 and the second stop block 10, the movement position of the pad 5 can be limited, thereby avoiding the threaded sleeve 4 from rotating out of the barrel 1.

[0027] The pad 5 is in the shape of a circular ring, and a plurality of square through holes 6 are arranged in the axial ring of the pad 5.

[0028] It can be understood that through the arrangement of the through holes 6, the operator can easily observe the insertion end of the needle 3, thereby facilitating the operator to insert the needle 3 into the overall body.

[0029] As shown in Figure 3 , the detent assembly 7 includes a sliding rod 71 slidably connected to the pad 5, and a plurality of recessed holes 72 are arranged in the barrel 1 along the vertical direction. The sliding rod 71 is clamped into the recessed hole 72, thereby limiting the sliding of the pad 5.

[0030] It can be understood that when the operator needs to limit the movement of the pad 5, the operator can slide the slide rod 71 into the recess hole 72, so that the pad 5 cannot move, avoiding the operator accidentally touching the threaded sleeve 4 to cause the pad 5 to move.

[0031] The clamping assembly 7 further comprises a spring 73 arranged between the pad 5 and the slide rod 71, and the spring 73 is sleeved on the outer wall of the slide rod 71.

[0032] It can be understood that in order to avoid the slide rod 71 from sliding out of the recess hole 72, the spring 73 is arranged, and through the extrusion force of the spring 73, the slide rod 71 can be stably positioned in the recess hole 72, and when the slide rod 71 needs to be slid out of the recess hole 72, the operator only needs to pull the slide rod 71.

[0033] The clamping assembly 7 further comprises a rotating shaft 75 rotatably connected to the pad 5, a baffle 76 arranged on the rotating shaft 75, and a contact block 74 arranged on the slide rod 71.

[0034] It can be understood that when the operator adjusts the position of the pad 5, that is, adjusts the length of the needle 3 exposed, the operator first slides the slide rod 71 out of the original recess hole 72, at this time the spring 73 is stretched, and when the slide rod 71 slides out, the contact block 74 will also move, and the contact block 74 will pass over the baffle 76, then the operator rotates the baffle 76 to make the baffle 76 face the contact block 74, then the operator can release the slide rod 71, and the slide rod 71 will move in the direction close to the recess hole 72 under the reset of the spring 73, and the slide rod 71 drives the contact block 74 to move, and the contact block 74 is finally in contact with the baffle 76 through the obstruction of the baffle 76, thereby limiting the slide rod 71 from continuing to move in the direction close to the recess hole 72, so that when the operator adjusts the position of the pad 5, the operator does not need to hold the slide rod 71 all the time, avoiding the slide rod 71 from being clamped into the recess hole 72 by the spring 73, thereby achieving the effect of conveniently adjusting the position of the pad 5.

[0035] In summary, by rotating the threaded sleeve 4, the threaded sleeve 4 drives the pad 5 to move, and the movement of the pad 5 adjusts the length of the needle 3 exposed, and after adjusting the length of the needle 3 exposed, the needle 3 can be pierced into the overall body, and the pad 5 is in contact with the outer wall of the overall body, so that through the limitation of the pad 5, the needle 3 cannot continue to be pierced into the overall body, thereby achieving the effect that the needle 3 is quantitatively pierced into the overall body, and through the clamping assembly 7, the clamping assembly 7 limits the movement of the pad 5, thereby preventing the operator from accidentally touching the threaded sleeve 4 to cause the pad 5 to move, avoiding the length of the needle 3 pierced into the overall body from being inaccurate.

[0036] As Figure 4As shown, it is the second embodiment of the utility model, this embodiment and first embodiment's difference lies in: the clamping component 7 including the threaded rod 77 that is connected in screwy way on the cushion block 5, the knob 78 that is set on the threaded rod 77 away from the barrel 1 one end, the threaded rod 77 abuts at the outside of the barrel 1, thereby limiting the cushion block 5 sliding.

[0037] It can be understood that when needing to limit the movement of cushion block 5, the operator can rotate the knob 78 in the positive direction, the knob 78 drives the threaded rod 77 to rotate, so that the threaded rod 77 abuts at the outer wall of the barrel 1, thereby limiting the movement of the cushion block 5 through the friction between the threaded rod 77 and the barrel 1.

[0038] Further, the clamping component 7 further comprises a plurality of recess holes 72 opened along the vertical direction of the barrel 1, and the threaded rod 77 is clamped into the recess hole 72, thereby limiting the sliding of the cushion block 5.

[0039] It can be understood that the operator rotates the threaded rod 77 into the recess hole 72, and the recess hole 72 cooperates with the threaded rod 77 to more stably limit the movement of the cushion block 5. Conversely, the operator can rotate the knob 78 in the reverse direction to drive the threaded rod 77 to rotate, so that the threaded rod 77 moves out of the recess hole 72.

[0040] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The above-described embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which are within the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A medical testing sampler, characterized by, The sampler comprises a barrel with a cylindrical inner cavity, a needle arranged at a lower part of the barrel and communicating with the inner cavity of the barrel, a piston rod slidingly connected with the inner cavity of the barrel, the piston rod being capable of generating negative pressure or positive pressure in the inner cavity of the barrel by sliding, and a positioning assembly arranged on the barrel and used for adjusting the length of the needle exposed outside, the positioning assembly comprising a threaded sleeve threadedly connected with an outer wall of the barrel, and a pad slidingly connected with the outer wall of the barrel and rotatably connected with the threaded sleeve, the sampler further comprising a detent assembly used for limiting the sliding of the pad, and the threaded sleeve is rotated to drive the pad to slide, so as to adjust the length of the needle exposed outside.

2. The sampler of claim 1, wherein, The positioning assembly further comprises a first stopper and a second stopper arranged on the barrel, and the threaded sleeve is located between the first stopper and the second stopper.

3. The sampler of claim 1, wherein, The pad has a circular ring shape, and a plurality of square through holes are arranged in an annular array along an axis of the pad.

4. The sampler of claim 1, wherein, The outer wall of the barrel is provided with a vertical one-word sliding groove, and the barrel is slidingly connected with the pad through the sliding groove.

5. The sampler of claim 1, wherein, The detent assembly comprises a sliding rod slidingly connected with the pad, and a plurality of recesses are arranged in a vertical direction of the barrel, the sliding rod is clamped into the recesses, so as to limit the sliding of the pad.

6. The sampler of claim 5, wherein, The detent assembly further comprises a spring arranged between the pad and the sliding rod, and the spring is sleeved on an outer wall of the sliding rod.

7. The sampler of claim 6, wherein, The detent assembly further comprises a rotating shaft rotatably connected with the pad, a baffle arranged on the rotating shaft, and a contact block arranged on the sliding rod.

8. The sampler of claim 1, wherein, The detent assembly comprises a threaded rod threadedly connected with the pad, a knob arranged on an end of the threaded rod away from the barrel, and the threaded rod abuts against an outer part of the barrel, so as to limit the sliding of the pad.

9. The sampler of claim 8, wherein, The detent assembly further comprises a plurality of recesses arranged in a vertical direction of the barrel, and the threaded rod is clamped into the recesses, so as to limit the sliding of the pad.

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