Auxiliary tool for detecting performance of cryoablation needle

Abstract

The utility model provides an auxiliary tool for detecting the performance of a cryoablation needle. The auxiliary tool comprises a measuring rod (10) and an adjusting seat (30), the measuring rod (10) extends along the measuring direction (D) and is provided with scales (11) arranged along the measuring direction (D). The adjusting seat (30) is movably arranged on the measuring rod (10) along a measuring direction (D) and a direction opposite to the measuring direction (D). The adjusting seat (30) is used for installing a temperature measuring line (91) of temperature measuring equipment. The performance detection auxiliary tool of the cryoablation needle is beneficial to accurately detecting the ice ball forming performance of the cryoablation needle.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical equipment detection, especially to the performance detection auxiliary tool of cryoablation needle. BACKGROUND

[0002] Freezing therapy is a technology developed with the development of interventional tumor therapy and minimally invasive technology, which is based on the principle that cells will undergo irreversible damage at extremely low temperature, and ice crystals are formed in and out of cells to cause cell membrane rupture and cell death. Cryoablation needle is often used in freezing therapy. For freezing therapy, accurate control of ice ball formation is particularly important, which requires understanding of the ice ball formation performance of cryoablation needle. At present, there is still a lack of method for accurately detecting the ice ball formation performance of cryoablation needle. SUMMARY

[0003] The utility model aims at providing a kind of performance detection auxiliary tool of cryoablation needle, it is conducive to the ice ball formation performance of cryoablation needle to be detected more accurately.

[0004] The utility model provides a kind of performance detection auxiliary tool of cryoablation needle, it includes gauge rod and adjusting seat. Gauge rod extends along the direction of measurement and has scale along the direction of measurement. Adjusting seat is movably arranged in gauge rod along the direction of measurement and the opposite direction of the direction of measurement. Adjusting seat is used to install the temperature measuring wire of temperature measuring equipment.

[0005] The performance detection auxiliary tool of cryoablation needle is conducive to the ice ball formation performance of cryoablation needle to be detected more accurately.

[0006] In another illustrative embodiment of the performance detection auxiliary tool of cryoablation needle, adjusting seat is slidably sleeved on gauge rod along the direction of measurement and the opposite direction of the direction of measurement. By this means, stability can be improved.

[0007] In another illustrative embodiment of the performance detection auxiliary tool of cryoablation needle, the circumferential surface of gauge rod is composed of two parallel planes and two convex arc surfaces opposite to each other. By this means, the smoothness of adjusting seat sliding can be improved.

[0008] In another illustrative embodiment of the performance detection auxiliary tool of cryoablation needle, adjusting seat has a sliding hole for sliding cooperation with gauge rod. Gauge rod has a side edge. The hole wall of sliding hole is concavely provided with a through groove opposite to the side edge, so as to form a avoiding gap between the groove wall of through groove and the side edge. By this means, the jam caused by machining error during sliding can be reduced.

[0009] In another exemplary embodiment of the performance testing auxiliary tool for the cryoablation needle, the adjusting base comprises a moving block and a cannula. The moving block is movably arranged on the measuring rod in the measuring direction and the opposite direction of the measuring direction. The cannula is connected to the moving block and is used to mount a temperature measuring wire of a temperature measuring device. The cannula is arranged on the side of the measuring rod facing the scale. The cannula has a through hole extending in the mounting direction perpendicular to the measuring direction. The end of the temperature measuring wire is arranged to protrude out of the front end of the through hole in the mounting direction for temperature measurement. In this way, the temperature measuring wire can be conveniently mounted on the cannula at an angle perpendicular to the measuring direction.

[0010] In another exemplary embodiment of the performance testing auxiliary tool for the cryoablation needle, the cannula is movably arranged in the moving block in the mounting direction and the opposite direction of the mounting direction. The rear end of the cannula in the mounting direction is provided with a radially protruding lapping portion. The lapping portion can be lapped on the moving block in the mounting direction to limit the relative movement of the cannula and the moving block. In this way, the mounting of the temperature measuring wire can be facilitated.

[0011] In another exemplary embodiment of the performance testing auxiliary tool for the cryoablation needle, the performance testing auxiliary tool further comprises a fixing frame and an adjusting frame. The fixing frame is used to connect an external support rod. The fixing frame is arranged to be adjustable in the fixed position relative to the external support rod in the axial direction of the external support rod. The adjusting frame is connected to the fixing frame and is adjustable in the fixed position relative to the fixing frame in the adjusting direction. The measuring rod is fixedly connected to the adjusting frame. The fixing and position adjustment of the measuring rod are facilitated by the fixing frame and the adjusting frame.

[0012] In another exemplary embodiment of the performance testing auxiliary tool for the cryoablation needle, the fixing frame comprises a main body, a clamping block and a first fixing bolt. The main body is formed with a first circular arc groove extending in the axial direction of the external support rod. The clamping block is formed with a second circular arc groove extending in the axial direction of the external support rod. The main body and the clamping block can clamp the cylindrical external support rod by the groove surfaces of the first circular arc groove and the second circular arc groove. The first fixing bolt connects the main body and the clamping block to fix the relative position of the main body and the clamping block. This structure is simple and has good stability. In addition, by clamping the cylindrical external support rod by the groove surfaces of the first circular arc groove and the second circular arc groove, the angle adjustment of the fixing frame around the axis of the external support rod can also be achieved.

[0013] In another exemplary embodiment of the performance testing auxiliary tool for the cryoablation needle, the main body further has two adjusting portions. Each adjusting portion has two oppositely arranged clamping arms. The two clamping arms form a clamping hole through the adjusting direction. The adjusting frame has two supporting rods. Each supporting rod is movably arranged in the clamping hole along the adjusting direction and the opposite direction of the adjusting direction. The fixing frame further includes two second fixing bolts. Each second fixing bolt connects the two clamping arms of one adjusting portion so that the two clamping arms clamp and fix the supporting rod. The two supporting rods are respectively fixedly connected to the two ends of the measurement rod along the measurement direction. The structure is simple and convenient to adjust.

[0014] In another exemplary embodiment of the performance testing auxiliary tool for the cryoablation needle, the performance testing auxiliary tool further includes a third fixing bolt. The third fixing bolt is threadedly connected to the adjusting seat and can fix the position of the adjusting seat on the measurement rod by abutting against the measurement rod. In this way, the position of the adjusting seat on the measurement rod can be fixed conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0015] The following drawings only illustrate and explain the utility model and do not limit the scope of the utility model.

[0016] Figure 1 The structure diagram of an exemplary embodiment of the performance testing auxiliary tool for the cryoablation needle.

[0017] Figure 2 The structure diagram of an exemplary embodiment of the performance testing auxiliary tool for the cryoablation needle. Figure 1 The partial structure of the performance testing auxiliary tool shown in the drawing is partially cut away.

[0018] Figure 3 The use state of the performance testing auxiliary tool shown in the drawing is shown. Figure 1

[0019] The top view of the partial structure of the performance testing auxiliary tool shown in the drawing. Figure 4 Figure 1

[0020] Figure 5 The sectional view of the performance testing auxiliary tool shown in the drawing. Figure 1

[0021] Explanation of reference numerals

[0022] 10 measurement rod

[0023] 11 scale

[0024] 13 side edge

[0025] 30 adjusting seat

[0026] 31 moving block

[0027] 311 sliding hole ​​​

[0028] 313 through slot

[0029] 32 insertion tube

[0030] 321 insertion hole

[0031] 322 lapping portion

[0032] 50 fixing frame

[0033] 51 main body

[0034] 511 first circular arc groove

[0035] 513 adjusting portion

[0036] 5131 clamping arm

[0037] 5132 clamping hole

[0038] 52 clamping block

[0039] 521 second circular arc groove

[0040] 53 first fixing bolt

[0041] 54 second fixing bolt

[0042] 70 adjusting frame

[0043] 71 supporting rod

[0044] 80 third fixing bolt

[0045] 91 temperature measuring line

[0046] 92 external supporting rod

[0047] 100 performance detection auxiliary tool

[0048] 200 cryoablation needle

[0049] O theoretical refrigeration center of cryoablation needle

[0050] D metric direction

[0051] A installation direction

[0052] T adjusting direction

[0053] X axial direction of external supporting rod DETAILED DESCRIPTION

[0054] In order to have a clearer understanding of the technical features, objectives and effects of the utility model, the specific implementation manners of the utility model will be described with reference to the drawings, and the same reference numerals in the drawings represent the same or similar components with the same function.

[0055] In the present text, "schematic" means "serving as an example, illustration or explanation" and any illustration, embodiment described as "schematic" in the present text should not be interpreted as a more preferred or more advantageous technical solution.

[0056] In the present text, "first", "second", etc. do not indicate their importance or order, etc., but are only used to distinguish each other for the description of the file.

[0057] For the sake of simplicity of the drawings, only the parts related to the present application are shown in the drawings, which do not represent the actual structure of the product.

[0058] Figure 1 Structure diagram of a schematic embodiment of the performance detection auxiliary tool for the cryoablation needle. As shown in Figure 1 , the performance detection auxiliary tool 100 for the cryoablation needle includes a gauge rod 10 and four adjusting seats 30 (only two of which are shown Figure 1 schematically). The gauge rod 10 extends along a gauge direction D and has a scale 11 arranged along the gauge direction D. Each adjusting seat 30 is movably arranged on the gauge rod 10 along the gauge direction D and the opposite direction of the gauge direction D. Each adjusting seat 30 is used to install a temperature measuring wire of a temperature measuring device.

[0059] Figure 2 Part structure of the performance detection auxiliary tool shown in Figure 1 , a partial sectional view of which is shown, wherein the sectional plane is perpendicular to the gauge direction D. Figure 2 In the figure, the temperature measuring wire 91 installed on the adjusting seat 30 is shown by a dashed line, and the lower end thereof is a temperature measuring end.

[0060] Figure 3 The use state of the performance detection auxiliary tool shown in Figure 1 is shown. Figure 3 In the figure, the dotted shaded part represents a gel, which represents human tissue. During detection, the cryoablation needle 200 is inserted into the gel. The position of the gauge rod 10 is fixed so that the gauge direction D is perpendicular to the cryoablation needle 200. The temperature measuring wire 91 is installed on the adjusting seat 30 in a manner that it is parallel to the cryoablation needle 200, and the temperature measuring ends (A, B, C and D) of the temperature measuring wire 91 and the theoretical refrigeration center O of the cryoablation needle 200 are located on the same straight line (shown by a dashed line in the figure) parallel to the gauge direction D. The straight line distance between the temperature measuring ends (A, B, C and D) and the theoretical refrigeration center O of the cryoablation needle 200 can be calculated according to the scale on the gauge rod 10. The position of the adjusting seat 30 on the gauge rod 10 is adjusted as needed. Finally, the cryoablation needle 200 is started to freeze, and the ice ball (shown by a dotted circle in the figure) formed by the cryoablation needle 200 can be measured by the temperature measuring wire 91. Figure 3During the ice ball formation process, the temperature at the positions of the temperature measuring ends (A, B, C and D) changes with time. Since the temperature change is directly related to the ice ball formation, the temperature change can be used to indicate the ice ball formation performance of the cryoablation needle.

[0061] The performance detection auxiliary tool for the cryoablation needle can be used to more accurately detect the ice ball formation performance of the cryoablation needle.

[0062] In other exemplary embodiments, the number of adjustment seats 30 can be adjusted as needed, which can be one, two or three, or more than four.

[0063] As shown in Figure 1 and Figure 2 In the exemplary embodiment, the adjustment seat 30 is slidably sleeved on the measurement rod 10 in the measurement direction D and the reverse direction of the measurement direction D. This can improve the stability. However, the adjustment seat 30 can also be movably arranged on the measurement rod 10 by other structures in other exemplary embodiments.

[0064] As shown in Figure 2 In the exemplary embodiment, the circumferential surface of the measurement rod 10 is composed of two parallel planes (i.e. the planes on the left and right sides in Figure 2 ) and two opposite convex arc surfaces (i.e. the arc surfaces on the upper and lower sides in Figure 2 ). This can improve the smoothness of the sliding of the adjustment seat.

[0065] As shown in Figure 2 In the exemplary embodiment, each adjustment seat 30 has a sliding hole 311 for slidingly cooperating with the measurement rod 10. The measurement rod 10 has four side edges 13 (only one of which is schematically indicated in Figure 2 ). The hole wall of the sliding hole 311 is concavely provided with four through grooves 313 (only one of which is schematically indicated in Figure 2 ) respectively opposite to the four side edges 13, so as to form a clearance between the groove wall of the through groove 313 and the side edge 13. This can reduce the jam caused by machining errors during sliding.

[0066] As shown in Figure 2 In the exemplary embodiment, each adjustment seat 30 includes a moving block 31 and a cannula 32. The moving block 31 is movably sleeved on the measurement rod 10 in the measurement direction D and the reverse direction of the measurement direction D. The cannula 32 is connected to the moving block 31 and is used to install a temperature measuring wire 91 of a temperature measuring device. The cannula 32 is arranged on the side of the measurement rod 10 facing the scale 11 (see Figure 1 ), so as to be convenient for observation. As shown in Figure 2As shown, the insertion tube 32 has an insertion hole 321 extending and penetrating along an installation direction A perpendicular to the measurement direction D. The temperature measuring wire 91 passes through the insertion tube 32 and is fixed in position by friction with the wall of the insertion hole 321. The front end of the temperature measuring wire 91 along the installation direction A (i.e., Figure 2 The lower end of the tube is used for temperature measurement. This allows the temperature measuring wire 91 to be installed at an angle perpendicular to the measuring direction D on the insertion tube 32.

[0067] like Figure 2 As shown, in this illustrative embodiment, the insertion tube 32 is movably inserted into the movable block 31 along installation direction A and the opposite direction of installation direction A. The rear end of the insertion tube 32 along installation direction A (i.e., Figure 2 The upper end of the tube 32 is provided with a radially protruding overlapping portion 322. The overlapping portion 322 can overlap the movable block 31 in the installation direction A to limit the relative movement between the tube 32 and the movable block 31. In use, the temperature measuring wire 91 can be installed on the tube 32 first, and then the tube 32 can be installed on the movable block 31, thereby facilitating the installation of the temperature measuring wire 91. The overlapping portion 322 can facilitate the restriction of the tube 32 relative to the movable block 31 in the installation position (i.e., Figure 2 (as shown in the diagram). However, this is not the only embodiment; in other illustrative embodiments, the cannula 32 may also be permanently fixed to the movable block 31.

[0068] like Figure 1 As shown in this illustrative embodiment, the performance testing aid also includes a mounting bracket 50 and an adjusting bracket 70. The mounting bracket 50 is used to connect an external support rod 92. The external support rod 92 is, for example, a support rod of an iron stand, but is not limited thereto.

[0069] The mounting bracket 50 is configured to be adjustable in position relative to the fixed position of the external support rod 92 along the axial direction X of the external support rod 92. Specifically, as shown... Figure 1 As shown, in this illustrative embodiment, the fixing frame 50 includes a main body 51, a clamping block 52, and two first fixing bolts. Figure 1 (Not visible in the middle). Figure 4 for Figure 1 The top view of a portion of the structure of the performance testing aid tool shown is as follows: Figure 1 and Figure 4As shown, the main body 51 is formed with a first circular-arc groove 511 extending along the axial direction X of the external support rod 92. The clamping block 52 is formed with a second circular-arc groove 521 extending along the axial direction X of the external support rod 92. The main body 51 and the clamping block 52 can clamp the cylindrical external support rod 92 by the groove faces of the first circular-arc groove 511 and the second circular-arc groove 521 oppositely. The first fixing bolt 53 connects the main body 51 and the clamping block 52 to fix the relative position of the main body 51 and the clamping block 52. This structure is simple and has good stability. In addition, the cylindrical external support rod 92 can be clamped by the groove faces of the first circular-arc groove 511 and the second circular-arc groove 521 oppositely, so that the angle adjustment of the fixing frame 50 around the axis of the external support rod 92 can be realized. In the illustrative embodiment, the axial direction X of the external support rod 92 is parallel to the mounting direction A, but is not limited thereto.

[0070] As shown in Figure 1 , the adjusting frame 70 is connected to the fixing frame 50 and is adjustable relative to the fixed position of the fixing frame 50 along the adjusting direction T. The measurement rod 10 is fixedly connected to the adjusting frame 70. As shown in Figure 4 , specifically, in the illustrative embodiment, the main body 51 further has two adjusting portions 513. Figure 5 As shown in Figure 1 , the cross-sectional view of the performance detection auxiliary tool, wherein the cross-sectional plane is perpendicular to the adjusting direction T, as shown in Figure 5 , each adjusting portion 513 has two clamping arms 5131 oppositely arranged. A clamping hole 5132 through along the adjusting direction T is formed between the two clamping arms 5131. The adjusting frame 70 has two support rods 71 (see Figure 1 ). Each support rod 71 movably penetrates the clamping hole 5132 along the adjusting direction T and the opposite direction of the adjusting direction T. The fixing frame 50 further includes two second fixing bolts 54. Each second fixing bolt 54 connects the two clamping arms 5131 of one adjusting portion 513 to clamp and fix the support rod 71. This structure is simple and facilitates adjustment. As shown in Figure 1 , the two support rods 71 are respectively fixedly connected to the two ends of the measurement rod 10 along the measurement direction D. The fixing frame and the adjusting frame facilitate the fixing and position adjustment of the measurement rod.

[0071] As shown in Figure 1 , in the illustrative embodiment, the performance detection auxiliary tool further includes four third fixing bolts 80 (only two of which are schematically shown in Figure 1 ). As shown in Figure 2As shown, each third fixing bolt 80 is screwed to the moving block 31 of an adjusting seat 30 and can fix the position of the adjusting seat 30 on the measuring rod 10 by abutting against the measuring rod 10. In this way, the position of the adjusting seat 30 on the measuring rod 10 can be fixed conveniently. In the present illustrative embodiment, the third fixing bolts 80 on the adjacent adjusting seats 30 are arranged on different sides of the adjusting seats 30 to avoid mutual interference in space.

[0072] It should be understood that, although the present specification is described in terms of various embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be combined appropriately to form other embodiments that those skilled in the art can understand.

[0073] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and are not intended to limit the protection scope of the present application, and any equivalent embodiments or modifications made without departing from the spirit of the present application, such as the combination, division or repetition of features, should be included in the protection scope of the present application.

Claims

1. An auxiliary tool for performance testing of a cryoablation needle, characterized in that, The utility model relates to a performance detection auxiliary tool, which comprises: a measurement rod (10) extending along a measurement direction (D) and having a scale (11) arranged along the measurement direction (D); and an adjusting seat (30) movably arranged on the measurement rod (10) along the measurement direction (D) and the reverse direction of the measurement direction (D), the adjusting seat (30) being used for mounting a temperature measuring wire of a temperature measuring device. The adjusting seat (30) is slidably sleeved on the measurement rod (10) along the measurement direction (D) and the reverse direction of the measurement direction (D).

2. The performance detection aid tool for a cryoablation needle according to claim 1, wherein, The circumferential surface of the measurement rod (10) is composed of two parallel planes and two opposite convex arc surfaces.

3. The performance detection aid for a cryoablation needle according to claim 2, wherein, The adjusting seat (30) has a sliding hole (311) for slidingly matching with the measurement rod (10), the measurement rod (10) has a side edge (13), and the hole wall of the sliding hole (311) is concavely provided with a through groove (313) opposite to the side edge (13) to form a clearance between the groove wall of the through groove (313) and the side edge (13).

4. The performance detection aid tool for a cryoablation needle according to claim 2, wherein, The adjusting seat (30) comprises:

5. The performance detection aid tool of the cryoablation needle according to claim 1, wherein, a moving block (31) movably arranged on the measurement rod (10) along the measurement direction (D) and the reverse direction of the measurement direction (D); and a cannula (32) connected with the moving block (31) and used for mounting the temperature measuring wire (91) of the temperature measuring device, the cannula (32) being arranged on the side of the measurement rod (10) facing the scale (11), the cannula (32) having a plug hole (321) extending along an installation direction (A) perpendicular to the measurement direction (D) and penetrating through, and the end of the temperature measuring wire (91) being arranged to protrude from the front end of the plug hole (321) along the installation direction (A) for temperature measurement. The cannula (32) is movably arranged in the moving block (31) along the installation direction (A) and the reverse direction of the installation direction (A), the rear end of the cannula (32) along the installation direction (A) is provided with a lapping portion (322) protruding in the radial direction, and the lapping portion (322) can be lapped on the moving block (31) along the installation direction (A) to limit the relative movement between the cannula (32) and the moving block (31).

6. The performance detection aid tool for a cryoablation needle according to claim 5, wherein, The performance detection auxiliary tool further comprises:

7. The performance detection aid tool of the cryoablation needle according to claim 1, wherein, a fixing frame (50) used for connecting an external support rod (92), the fixing frame (50) being arranged to be adjustable relative to the fixed position of the external support rod (92) along the axial direction (X) of the external support rod (92); and an adjusting frame (70) connected with the fixing frame (50) and adjustable relative to the fixed position of the fixing frame (50) along an adjusting direction (T), the measurement rod (10) being fixedly connected with the adjusting frame (70). The fixing frame (50) comprises:

8. The performance detection aid tool for a cryoablation needle according to claim 7, wherein, a main body (51) having a first circular arc groove (511) formed thereon and extending along the axial direction (X) of the external support rod (92); ​ The clamping block (52) has a second circular-arc groove (521) extending along the axial direction (X) of the external support rod (92), and the main body (51) and the clamping block (52) can clamp the cylindrical external support rod (92) by the groove faces of the first circular-arc groove (511) and the second circular-arc groove (521) in opposition. The first fixing bolt (53) connects the main body (51) and the clamping block (52) to fix the relative position of the main body (51) and the clamping block (52).

9. The performance detection aid tool of the cryoablation needle according to claim 8, characterized in that, The main body (51) further has two adjusting portions (513), each of which has two clamping arms (5131) arranged in opposition, and a clamping hole (5132) is formed between the two clamping arms (5131) and extends along the adjusting direction (T). The adjusting frame (70) has two support rods (71), each of which is movably arranged in the clamping hole (5132) along the adjusting direction (T) and the opposite direction of the adjusting direction (T). The fixing frame (50) further includes two second fixing bolts (54), each of which connects the two clamping arms (5131) of one adjusting portion (513) to clamp and fix the support rod (71), and the two support rods (71) are respectively fixedly connected to the two ends of the measurement rod (10) along the measurement direction (D).

10. The performance detection aid tool of the cryoablation needle according to claim 1, wherein, The performance detection auxiliary tool further includes a third fixing bolt (80), which is threadedly connected to the adjusting seat (30) and can fix the position of the adjusting seat (30) on the measurement rod (10) by abutting against the measurement rod (10).

Images