Tissue stem cell extraction device
By designing protective components on the pipette, using structures such as limiting columns, protective sleeves and springs to prevent bacterial contamination, the pollution problem caused by exposure to the pipette gun head is solved, and the normal use of the equipment is ensured.
Patent Information
- Application Number
- CN202421005969.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-10
AI Technical Summary
When the existing pipette is not in use, the gun tip is exposed to the outside world, which can easily lead to bacterial contamination and affect the normal use of the equipment.
A tissue stem cell extraction device including a pipette body, a gun head and a protective component is designed. The gun head is protected from bacteria entering the pipette through a combination of limiting column, protective sleeve, a resisting spring and a pressing block. utensil.
It effectively prevents external bacteria from entering the pipette, ensuring the clean and sustainable use of the equipment.
Smart Images
Figure CN222305850U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stem cell extraction equipment, in particular to a tissue stem cell extraction device. Background Art
[0002] In the fields of biology, medicine, and chemistry, some experimental studies on analysis and testing are often conducted. These studies usually require quantitative transfer of liquids, and generally use pipettes to transfer liquids. Pipettes can be divided into gas piston pipettes and external piston pipettes according to the principle. Gas piston pipettes are mainly used for standard pipetting, and external piston pipettes are mainly used to handle special liquids such as volatile, corrosive, and viscous. When using existing pipettes, when the control button is released while the pipette is squeezing out the internal liquid, other external liquids will be sucked in, resulting in an error in the proportion of the mixed liquid, affecting the normal progress of the experiment.
[0003] In the prior art patent CN216172436U, a tissue stem cell extraction device is disclosed. By adding a one-way device between the elastic suction nozzle and the gun head, the control button can be released in advance when the extraction device needs to squeeze the liquid into the remaining liquid. The one-way device can also avoid the suction of external liquid, thereby ensuring the correct ratio of the configured liquid solution and allowing the experiment to proceed normally.
[0004] However, in the above-mentioned prior art patent, when the pipette is not in use, the tip of the pipette below is exposed to the outside world, and external bacteria can easily enter the pipette through the tip of the pipette, causing contamination inside the pipette, making it impossible to continue to use. Utility Model Content
[0005] The utility model aims to provide a tissue stem cell extraction device, which solves the problem that when the pipette is not in use, the gun tip below the pipette is exposed to the outside world, and external bacteria can easily enter the pipette through the gun tip, causing contamination inside the pipette and making it impossible to continue to use.
[0006] To achieve the above-mentioned purpose, the utility model adopts a tissue stem cell extraction device, including a pipette body, a gun head and a protective component, wherein the gun head is connected to the pipette body and is located below the pipette body, the protective component includes a connecting ring, two limiting columns, a protective cover, two holding springs, two limiting arc blocks and two pressing blocks, the connecting ring is fixedly connected to the pipette body, the two limiting columns are fixedly connected to the connecting ring and are located below the connecting ring, the protective cover has two limiting grooves and two fixing holes, the two limiting columns are respectively matched with the corresponding limiting grooves, the two limiting columns have two grooves, each limiting arc block is movably connected to the corresponding limiting column and is respectively matched with the corresponding groove and the fixing hole, each holding spring is respectively arranged in the corresponding groove and fixedly connected to the corresponding limiting arc block, the two pressing blocks are movably connected to the protective cover and are respectively located on the corresponding fixing holes.
[0007] Wherein, the protection component also includes two guide arc blocks, and the two guide arc blocks are respectively fixedly connected to the corresponding limiting columns and are respectively located below the limiting columns.
[0008] Wherein, the protection component also includes two shifting blocks, both of which are fixedly connected to the protection sleeve and are located on the outer side wall of the protection sleeve.
[0009] Wherein, the protection component also includes two rubber pads, and the two rubber pads are respectively fixedly connected to the corresponding limiting arc blocks and are respectively located on the outer side walls of the limiting arc blocks.
[0010] Wherein, the tissue stem cell extraction device also includes a pushing component, and the pushing component is arranged in the protective sleeve.
[0011] Among them, the pushing assembly includes a limiting cylinder, a movable orifice plate and two return springs. The limiting cylinder is fixedly connected to the protective sleeve and is located on the bottom wall of the protective sleeve. The movable orifice plate is movably connected to the limiting cylinder and is located in the limiting cylinder. The two ends of each return spring are respectively fixedly connected to the limiting cylinder and the movable orifice plate.
[0012] Wherein, the pushing assembly further includes two sliding blocks, the limiting cylinder has two sliding grooves, and the two sliding blocks are both fixedly connected to the movable orifice plate and are respectively located in the corresponding sliding grooves.
[0013] Wherein, the pushing component also includes a sponge block, which is fixedly connected to the limiting cylinder and is located on the bottom wall of the limiting cylinder.
[0014] The utility model provides a tissue stem cell extraction device. When protecting the gun head, the two limiting columns under the pipette body are first inserted into the two limiting grooves of the protective sleeve. During the insertion process, the limiting arc blocks on the limiting columns are squeezed, and the limiting arc blocks enter the grooves to squeeze the supporting springs. When the limiting columns completely enter the limiting grooves, the supporting springs restore their deformation and push the limiting arc blocks out of the grooves. The limiting arc blocks enter the protective sleeve. The protective sleeve is fixed in the fixing hole under the pipette body, and the gun tip is protected by the protective sleeve. When using the pipette body, the two pressing blocks are pressed respectively on the outside of the protective sleeve, each pressing block moves in the fixing hole, and the limiting arc block is squeezed into the groove of the limiting column, and then the pipette body is separated from the protective sleeve. Through the above method, the gun tip under the pipette can be protected to prevent bacteria from entering the pipette and causing contamination, which is beneficial to subsequent normal use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.
[0017] Figure 2 It is a cross-sectional view of the internal structure of the first embodiment of the utility model.
[0018] Figure 3 The utility model Figure 2 A magnified view of the local structure at A.
[0019] Figure 4 It is a cross-sectional view of the internal structure of the second embodiment of the utility model.
[0020] Figure 5 The utility model Figure 4 Enlarged view of the local structure at point B.
[0021] 101-pipette body, 102-gun tip, 103-connecting ring, 104-limiting column, 105-resisting spring, 106-limiting arc block, 107-pressing block, 108 guiding arc block, 109-push block, 110-rubber pad, 111-limiting groove, 112-fixing hole, 113-groove, 114-protective cover, 201-limiting cylinder, 202-movable orifice plate, 203-reset spring, 204-slider, 205-sponge block, 206-sliding groove. DETAILED DESCRIPTION
[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0023] First embodiment
[0024] See also Figure 1 to Figure 3 ,in Figure 1 is a schematic diagram of the overall structure of the first embodiment, Figure 2 is a cross-sectional view of the internal structure of the first embodiment, Figure 3 yes Figure 2 A magnified view of the local structure at A.
[0025] The utility model provides a tissue stem cell extraction device: comprising a pipette body 101, a gun tip 102 and a protective component, wherein the protective component comprises a connecting ring 103, two limiting columns 104, a protective sleeve 114, two holding springs 105, two limiting arc blocks 106, two pressing blocks 107, two guiding arc blocks 108, two shifting blocks 109 and two rubber pads 110. The above-mentioned solution solves the problem that when the pipette is not in use, the gun tip under the pipette is exposed to the outside world, and external bacteria easily enter the pipette through the gun tip, which will cause contamination inside the pipette and make it impossible to continue to use.
[0026] According to this specific embodiment, the gun tip 102 is connected to the pipette body 101 and is located below the pipette body 101 . The gun tip 102 is connected to the pipette body 101 , and the pipette body 101 is used to transfer liquid.
[0027] The connecting ring 103 is fixedly connected to the pipette body 101, the two limiting posts 104 are fixedly connected to the connecting ring 103 and are both located below the connecting ring 103, the protective cover 114 has two limiting grooves 111 and two fixing holes 112, the two limiting posts 104 are respectively adapted to the corresponding limiting grooves 111, the two limiting posts 104 have two grooves 113, each limiting arc block 106 is respectively movably connected to the corresponding limiting post 104, and is respectively connected to the corresponding The groove 113 is adapted to the fixing hole 112, each of the resisting springs 105 is respectively arranged in the corresponding groove 113 and fixedly connected to the corresponding limiting arc block 106, and the two pressing blocks 107 are movably connected to the protective sleeve 114 and are respectively located on the corresponding fixing holes 112. When protecting the gun head 102, the two limiting columns 104 under the pipette body 101 are first inserted into the two limiting grooves 111 of the protective sleeve 114. During the insertion process, the limiting columns 104 The limiting arc block 106 on the 04 will be squeezed, and the limiting arc block 106 enters the groove 113 to squeeze the holding spring 105. When the limiting column 104 completely enters the limiting groove 111, the holding spring 105 will restore its deformation and push the limiting arc block 106 out of the groove 113. The limiting arc block 106 will enter the fixing hole 112 of the protective cover 114, so that the protective cover 114 is fixed under the pipette body 101, and the gun head 102 is fixed by the protective cover. The protective cover 114 is used for protection. When the pipette body 101 is used, the two pressing blocks 107 are pressed respectively on the outside of the protective cover 114, each pressing block 107 moves in the fixing hole 112, and the limiting arc block 106 is squeezed into the groove 113 of the limiting column 104, and then the pipette body 101 is separated from the protective cover 114. In this way, the gun tip 102 below the pipette can be protected to prevent bacteria from entering the pipette and causing contamination, which is beneficial to subsequent normal use.
[0028] Secondly, the two guide arc blocks 108 are fixedly connected to the corresponding limiting columns 104 and are respectively located below the limiting columns 104. The guide arc blocks 108 are semicircular, and the limiting columns 104 can easily enter the limiting grooves 111 of the protective sleeve 114 through the guide arc blocks 108.
[0029] At the same time, the two shifting blocks 109 are fixedly connected to the protective cover 114 and are both located on the outer wall of the protective cover 114. By arranging the shifting blocks 109 on the outer side of the protective cover 114, the shifting blocks 109 can facilitate the removal of the protective cover 114 and the connection with the pipette body 101.
[0030] In addition, the two rubber pads 110 are respectively fixedly connected to the corresponding limiting arc blocks 106 and are respectively located on the outer side walls of the limiting arc blocks 106. By arranging the rubber pads 110 on the outer side of the limiting arc blocks 106, the rubber pads 110 can increase the friction of the limiting arc blocks 106 in the fixing holes 112, so that the pipette body 101 and the protective cover 114 are firmly connected.
[0031] When protecting the gun tip 102, first insert the two limiting columns 104 under the pipette body 101 into the two limiting grooves 111 of the protective sleeve 114. The guide arc block 108 facilitates the insertion of the limiting column 104. During the insertion process, the limiting arc block 106 on the limiting column 104 will be squeezed, and the limiting arc block 106 enters the groove 113 to squeeze the supporting spring 105. When the limiting column 104 completely enters the limiting groove 111, the supporting spring 105 will restore its deformation and push the limiting arc block 106 out of the groove 113. The limiting arc block 106 will enter the fixing hole 112 of the protective sleeve 114, so that the protective sleeve 114 is fixed under the pipette body 101. The gun tip 102 is protected by the protective cover 114. When the pipette body 101 is used, the two pressing blocks 107 are pressed respectively on the outside of the protective cover 114, each pressing block 107 moves in the fixing hole 112, and squeezes the limiting arc block 106 into the groove 113 of the limiting column 104, and then the pipette body 101 is separated from the protective cover 114; wherein, by providing the rubber pad 110, the rubber pad 110 can increase the friction of the limiting arc block 106 in the fixing hole 112, so that the pipette body 101 and the protective cover 114 are firmly connected. In the above manner, it is achieved that the gun tip 102 under the pipette can be protected to prevent bacteria from entering the pipette and causing contamination, which is beneficial to subsequent normal use.
[0032] Second embodiment
[0033] See also Figure 4 and Figure 5 ,in Figure 4 is a cross-sectional view of the internal structure of the second embodiment, Figure 5 yes Figure 4 Enlarged view of the local structure at point B.
[0034] On the basis of the first embodiment, the tissue stem cell extraction device of the utility model further includes a pushing assembly, which includes a limiting cylinder 201, a movable orifice plate 202, two return springs 203, two sliders 204 and a sponge block 205.
[0035] The pushing component is disposed in the protective sleeve 114 . By disposing the pushing component in the protective sleeve 114 , when the protective sleeve 114 is disassembled, the pushing component can be used to separate the protective sleeve 114 from the pipette body 101 , which is easy to operate.
[0036] The limiting cylinder 201 is fixedly connected to the protective sleeve 114 and is located on the bottom wall of the protective sleeve 114. The movable orifice plate 202 is movably connected to the limiting cylinder 201 and is located in the limiting cylinder 201. The two ends of each of the reset springs 203 are respectively fixedly connected to the limiting cylinder 201 and the movable orifice plate 202. The limiting cylinder 201 is arranged on the bottom wall of the protective sleeve 114. When the protective sleeve 114 is connected to the pipette body 101, the bottom end of the gun head 102 enters the limiting cylinder 201 and squeezes the movable orifice plate 202. The movable orifice plate 202 squeezes the two return springs 203 downward in the limiting cylinder 201. When the protective cover 114 is disassembled, the restriction on the two return springs 203 is released, and the two return springs 203 recover their deformation. The two return springs 203 push the movable orifice plate 202 outward in the limiting cylinder 201. The movable orifice plate 202 pushes the gun head 102, so that the pipette body and the protective cover 114 are quickly separated. Through the above method, it is easy to separate the protective cover 114 from the pipette body 101, and the operation is simple.
[0037] The limiting cylinder 201 has two sliding grooves 206, and the two sliders 204 are fixedly connected to the movable orifice plate 202 and are respectively located in the corresponding sliding grooves 206. When the gun head 102 pushes the movable orifice plate 202 to move in the limiting cylinder 201, the two sliders 204 on the outer sides of the movable orifice plate 202 will slide in the sliding grooves 206 of the limiting cylinder 201 respectively. The setting of the slider 204 increases the stability of the movement of the movable orifice plate 202.
[0038] The sponge block 205 is fixedly connected to the limiting cylinder 201 and is located on the bottom wall of the limiting cylinder 201 . By arranging the sponge block 205 in the limiting cylinder 201 , the sponge block 205 can protect the bottom end of the gun head 102 .
[0039] The limiting cylinder 201 is arranged on the bottom wall of the protective sleeve 114. When the protective sleeve 114 is connected to the pipette body 101, the bottom end of the gun head 102 enters the limiting cylinder 201 and squeezes the movable orifice plate 202. The movable orifice plate 202 squeezes the two return springs 203 downward in the limiting cylinder 201. At the same time, the two sliders 204 on the outer side of the movable orifice plate 202 slide in the sliding grooves 206 of the limiting cylinder 201 respectively. When the protective cover 114 is disassembled, the restriction on the two reset springs 203 is released, and the two reset springs 203 restore their deformation. The two reset springs 203 push the movable orifice plate 202 outward in the limiting cylinder 201, and the movable orifice plate 202 pushes the gun head 102, so that the pipette body and the protective cover 114 are quickly separated. Through the above method, the protective cover 114 can be easily separated from the pipette body 101, and the operation is simple.
[0040] The above disclosures are only two preferred embodiments of the present invention, which certainly cannot be used to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.
Claims
1. A tissue stem cell extraction device, comprising a pipette body and a gun head, wherein the gun head is connected to the pipette body and is located below the pipette body, characterized in that: The invention also includes a protective component, which includes a connecting ring, two limiting columns, a protective sleeve, two supporting springs, two limiting arc blocks and two pressing blocks. The connecting ring is fixedly connected to the pipette body, and the two limiting columns are fixedly connected to the connecting ring and are located below the connecting ring. The protective sleeve has two limiting grooves and two fixing holes. The two limiting columns are respectively matched with the corresponding limiting grooves. The two limiting columns have two grooves. Each limiting arc block is movably connected to the corresponding limiting column and is respectively matched with the corresponding groove and the fixing hole. Each supporting spring is respectively arranged in the corresponding groove and fixedly connected to the corresponding limiting arc block. The two pressing blocks are movably connected to the protective sleeve and are respectively located on the corresponding fixing holes.
2. The tissue stem cell extraction device according to claim 1, characterized in that: The protection component also includes two guide arc blocks, which are respectively fixedly connected to the corresponding limiting columns and are respectively located below the limiting columns.
3. The tissue stem cell extraction device according to claim 2, characterized in that: The protection component also includes two shifting blocks, which are both fixedly connected to the protection sleeve and are both located on the outer side wall of the protection sleeve.
4. The tissue stem cell extraction device according to claim 3, characterized in that: The protection component also includes two rubber pads, which are fixedly connected to the corresponding limiting arc blocks and are respectively located on the outer side walls of the limiting arc blocks.
5. The tissue stem cell extraction device according to claim 1, characterized in that: The tissue stem cell extraction device further comprises a pushing component, and the pushing component is arranged in the protective sleeve.
6. The tissue stem cell extraction device according to claim 5, characterized in that: The pushing assembly includes a limiting cylinder, a movable orifice plate and two return springs. The limiting cylinder is fixedly connected to the protective sleeve and is located on the bottom wall of the protective sleeve. The movable orifice plate is movably connected to the limiting cylinder and is located in the limiting cylinder. The two ends of each return spring are respectively fixedly connected to the limiting cylinder and the movable orifice plate.
7. The tissue stem cell extraction device according to claim 6, characterized in that: The pushing assembly further comprises two sliding blocks, the limiting cylinder has two sliding grooves, the two sliding blocks are both fixedly connected to the movable orifice plate and are respectively located in the corresponding sliding grooves.
8. The tissue stem cell extraction device according to claim 7, characterized in that: The pushing assembly also includes a sponge block, which is fixedly connected to the limiting cylinder and is located on the bottom wall of the limiting cylinder.