Auxiliary positioning device for thin-walled tissue frozen sheet preparation
By designing an auxiliary positioning device for thin -walled tissue frozen production to ensure that the tissue maintains upright during the freezing process, solve the problem of incomplete and time -consuming of thin -walled tissue frozen production in existing technologies, and achieves more efficient And accurate frozen production.
Patent Information
- Application Number
- CN202420650168.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-01
AI Technical Summary
The prior art is difficult to maintain parenchymal tissue, especially cystic tumor tissue, during the freezing and filming process, which is in an upright state, resulting in the production time, poor integrity and ice crystal production, affecting the freezing reporting time and surgical time.
A auxiliary positioning device that includes a solid block, a solid needle, and a handheld holder is designed. It is inserted into the cyst wall tissue and fixed on the fixing block through the solid position needle to ensure that the tissue is upright during the embedded solution and freezing process.
The upright state of the thin wall tissue in the freezing process is achieved, the integrity and speed of frozen production are improved, the production of ice crystals is reduced, the production time is shortened, and the accuracy of frozen pathological diagnosis is improved.
Smart Images
Figure CN222383338U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an auxiliary device for freezing slice making, in particular to an auxiliary positioning device for freezing slice making of thin-walled tissue. Background Art
[0002] Tumor types vary, and the tumor substance can be solid, cystic, or simply cystic. During surgery, cryosurgery of the tumor is an important means of tumor characterization.
[0003] At present, when pathology departments are freezing cystic tumors, especially when the tumor cyst wall is thin, they usually pre-cool the embedding solution first, and then put the cyst wall in for freezing. However, after the cyst wall is placed in the embedding solution, it will inevitably collapse to a certain extent. At this time, you cannot use a freezing hammer to press and freeze it quickly, because it will increase the degree of collapse or even lie flat, and you can only wait for it to freeze slowly. Therefore, it takes a long time to prepare the slices, and it is not easy to cut the cyst wall completely. It is easy to produce ice crystals, which affects the freezing report time and leads to prolonged operation time.
[0004] The prior art (2020206620954, a support device for rapid pathological frozen sections) mentions a support device for thin-walled tissue, but it limits the maximum width of the thin wall, and the thin-walled tissue still inevitably has a certain inclination angle in the support, and there is also the risk of the slicer cutting the support.
[0005] The prior art (2019201133390, a support device for rapid pathological frozen sections) mentions the use of hot melt glue sticks for support. However, there is no support on both sides of the tissue to prevent the thin-walled tissue from falling over, and the hot melt glue sticks are hard and brittle after freezing, making them difficult to make slices.
[0006] Therefore, there is still a need to provide a suitable auxiliary positioning device for use in thin-walled tissue freezing slice preparation to ensure that the thin-walled tissue is in an upright state in the embedding solution. Utility Model Content
[0007] The purpose of the utility model is to provide an auxiliary positioning device for thin-walled tissue cryosectioning in order to solve at least one of the above problems, so as to solve the deficiency in the prior art that it is difficult to achieve an upright state of thin-walled tissue (especially cystic tumor tissue) in an embedding solution. The present solution realizes the auxiliary positioning of the cystic wall tissue, so that the tissue is in an upright state in the embedding solution and during the freezing process.
[0008] The purpose of the utility model is achieved through the following technical solutions:
[0009] An auxiliary positioning device for thin-walled tissue cryosectioning, comprising a retaining block, a retaining needle and a handheld part;
[0010] The retaining block is provided with a retaining hole for inserting the tip of the retaining needle;
[0011] The retaining needles are arranged in pairs, and a retaining disk is also arranged on the retaining needles; the retaining needles are arranged toward the retaining block;
[0012] The hand-held part is connected with the retaining needle respectively.
[0013] Preferably, the retaining pins are arranged parallel to each other.
[0014] Preferably, the needle body of the retention needle is provided with a spiral structure. The spiral structure (thread structure) is easier to be pulled out than a smooth surface, and is less likely to damage tissues in this manner.
[0015] Preferably, the tail end of the retaining needle is provided with a screw sleeve, which can be used to apply a rotational torque to the retaining needle when withdrawing it, and is convenient for holding the retaining needle by hand, especially when the retaining needle is manually withdrawn.
[0016] Preferably, the surface of the screw sleeve is provided with anti-skid patterns, which further prevent slipping during rotation, ensuring smooth withdrawal of the retaining needle while avoiding damage to the frozen parenchyma tissue.
[0017] Preferably, the screw sleeve is a plastic part.
[0018] Preferably, the top height of the retaining plate is not lower than the top surface or top height of the retaining block. The retaining plate and the retaining block are substantially at the same height, and the two retaining plates and the retaining block can jointly play the role of fixing the quick freezing hammer, preventing the quick freezing hammer from tilting, thereby avoiding compressing or flattening the tissue, thereby ensuring that the entire layer of the cyst wall tissue can be fully presented. In addition, the circular retaining plate is also conducive to the withdrawal of the retaining needle.
[0019] Preferably, the hand-held portion is a T-shaped structure, including a connecting rod and a hand-held rod, the connecting rods are respectively connected to the retaining needles, and the hand-held rod is connected to the connecting rod.
[0020] Preferably, the connecting rod is connected to the side of the retaining needle away from the tip, and the retaining plate is arranged between the tip of the retaining needle and the connecting rod.
[0021] Preferably, the hand-held rod is connected to the center of the connecting rod.
[0022] The working principle of the utility model is:
[0023] When in use, pour embedding solution on the sample tray for precooling, place the retaining block on one side of the embedding solution on the sample tray, and make the retaining hole face the embedding solution; use the handheld part to pass the retaining needle through the front and rear ends of the long axis of the cystic wall tissue, and then pass the retaining needle into the retaining hole from the other side of the embedding solution. At this time, the cystic wall tissue is located in an upright state on the sample tray; press the quick-freezing hammer to quick-freeze the cystic wall tissue, and after coagulation, tap the retaining block to separate it from the sample tray, then withdraw the retaining needle, complete the withdrawal of the auxiliary positioning device, and then start slicing.
[0024] Compared with the prior art, the utility model has the following beneficial effects:
[0025] The auxiliary positioning device of this scheme ensures that the cystic wall tissue is always in an upright state during the freezing process of the cystic wall tissue, which can improve the freezing preparation integrity of the cystic wall tissue, reduce the generation of ice crystals, shorten the freezing preparation time, and improve the accuracy of frozen pathological diagnosis. The tool has the advantages of simple structure, reasonable setting, low production cost, and can be used repeatedly. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the auxiliary positioning device;
[0027] Figure 2 It is a schematic diagram of the top view of the auxiliary positioning device;
[0028] In the figure: 1-retention block; 11-retention hole; 2-retention needle; 21-retention plate; 22-screwing sleeve; 3-hand-held part; 31-connecting rod; 32-hand-held rod. DETAILED DESCRIPTION
[0029] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.
[0030] Example
[0031] An auxiliary positioning device for thin-walled tissue cryosectioning, such as Figure 1 and Figure 2 As shown, it includes a retaining block 1, a retaining needle 2 and a handheld part 3;
[0032] The retaining block 1 is provided with a retaining hole 11 for inserting the tip of the retaining needle 2;
[0033] The retaining needles 2 are provided in pairs, and a retaining disk 21 is also provided on the retaining needles 2; the retaining needles 2 are arranged toward the retaining block 1;
[0034] The hand-held part 3 is connected to the retaining needle 2 respectively.
[0035] More specifically, in this embodiment:
[0036] The auxiliary positioning device, such as Figure 1 , 2 As shown, the main body includes three parts: a retaining block 1 (A), a retaining needle 2 (B) and a hand-held part 3 (C).
[0037] The retaining block 1 is a metal stainless steel block, and its size can be designed according to the experimental requirements: 1-2 cm long, 0.1-0.5 cm wide, and 0.5-1 cm high. On one side surface of the retaining block 1, retaining holes 11 are respectively opened near the two ends along the long axis to allow the tip of the retaining needle 2 to be inserted and limited.
[0038] The retaining needle 2 includes a pair of needles, which are consistent in size and shape and uniform in thickness. A spiral structure is arranged on the needle body of the retaining needle 2; a retaining disk 21 is also fixedly arranged near the tail end of the retaining needle 2, and the retaining disk 21 and the retaining needle 2 can be arranged concentrically; a screw sleeve 22 is arranged at the tail of the retaining needle 2, and the rotation of the screw sleeve 22 can drive the rotation of the retaining needle 2. The screw sleeve 22 is a plastic part, cylindrical, and its surface is also provided with anti-slip lines. The overall length of the retaining needle 2 is 1-3cm, the length of the screw sleeve 22 can be controlled to be 1-2cm, and the distance between the retaining disk 21 and the screw sleeve 22 is 0.1-0.2cm. When in use, the top height of the retaining disk 21 is controlled to be equal to or slightly higher than the top surface height of the retaining block 1.
[0039] The hand-held portion 3 adopts a T-shaped structure, including a horizontal connecting rod 31 and a vertical hand-held rod 32. The connecting rod 31 is movably connected between the two retaining pins 2 to form a dumbbell-shaped structure, and the connection point between the connecting rod 31 and the retaining pin 2 is located between the retaining disk 21 and the screw sleeve 22; the hand-held rod 32 is fixedly connected to the center position of the connecting rod 31. The entire hand-held portion 3 is made of stainless steel. By moving the hand-held rod 32 to perform telescopic movement, the connecting rod 31 can be driven to perform telescopic movement, and then the retaining pin 2 can be driven to move toward or away from the retaining block 1. The length of the connecting rod 31 is the straight-line distance between the two retaining holes 11 on the retaining block 1, so that a pair of retaining pins 2 assembled on the hand-held portion 3 can be respectively inserted into the two retaining holes 11 on the retaining block 1.
[0040] When in use, first pour the embedding solution on the sample tray for precooling, then place the retaining block 1 on the sample tray and on the left side of the embedding solution, and make the retaining hole 11 on the retaining block 1 face the right side (i.e., toward the embedding solution). Then pinch the handheld part 3, and pass the two retaining needles 2 through the front and rear ends of the long axis of the cystic wall tissue respectively, then insert the needle tip into the retaining hole 11 to fix the limit, and control the top height of the retaining disk 21 to be equal to or slightly higher than the top surface height of the limit block. Then press the quick freezing hammer to freeze the cystic wall tissue quickly. After it is completely solidified, tap the limit block with tweezers, quick freezing hammer or other objects to make it detach from the sample tray, then pinch the screw sleeve 22, and rotate it in the opposite direction of the spiral structure on the retaining needle 2 to withdraw the two retaining needles 2, complete the detachment of the auxiliary positioning device, and then start slicing.
[0041] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.
Claims
1. An auxiliary positioning device for thin-walled tissue freezing and sectioning, characterized in that: It comprises a retaining block (1), a retaining needle (2) and a handheld part (3); The retaining block (1) is provided with a retaining hole (11) for inserting the tip of the retaining needle (2); The retaining needles (2) are provided in pairs, and a retaining disk (21) is also provided on the retaining needles (2); the retaining needles (2) are arranged toward the retaining block (1); The hand-held part (3) is connected to the retaining needle (2) respectively.
2. The auxiliary positioning device for thin-walled tissue cryosectioning according to claim 1, characterized in that: The retaining pins (2) are arranged parallel to each other.
3. The auxiliary positioning device for thin-walled tissue freezing and sectioning according to claim 1, characterized in that: The needle body of the retaining needle (2) is provided with a spiral structure.
4. The auxiliary positioning device for thin-walled tissue cryosectioning according to claim 3, characterized in that: The rear end of the retaining needle (2) is provided with a screw sleeve (22).
5. The auxiliary positioning device for thin-walled tissue freezing and sectioning according to claim 4, characterized in that: The surface of the screw sleeve (22) is provided with anti-slip textures.
6. The auxiliary positioning device for thin-walled tissue cryosectioning according to claim 4, characterized in that: The screwing sleeve (22) is a plastic part.
7. The auxiliary positioning device for thin-walled tissue cryosectioning according to claim 1, characterized in that: The top point height of the retaining plate (21) is not lower than the top surface or top point height of the retaining block (1).
8. The auxiliary positioning device for thin-walled tissue cryosectioning according to claim 1, characterized in that: The hand-held part (3) is a T-shaped structure, comprising a connecting rod (31) and a hand-held rod (32), wherein the connecting rod (31) is respectively connected to the retaining needle (2), and the hand-held rod (32) is connected to the connecting rod (31).
9. The auxiliary positioning device for thin-walled tissue cryosectioning according to claim 8, characterized in that: The connecting rod (31) is connected to the side of the retaining needle (2) away from the tip, and the retaining plate (21) is arranged between the tip of the retaining needle (2) and the connecting rod (31).
10. The auxiliary positioning device for thin-walled tissue cryosectioning according to claim 8, characterized in that: The hand-held rod (32) is connected to the center of the connecting rod (31).