A prostate tissue pulverizer
By designing the cage-like structure of the cannula and cutting electrodes, the problems of low efficiency and high cost of traditional prostate tissue pulverization technology are solved, and efficient and safe prostate tissue cutting is achieved, which simplifies surgical operations and reduces equipment costs.
Patent Information
- Application Number
- CN202011045140.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-09-28
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2040-09-28
AI Technical Summary
Traditional prostate tissue crushing technology is inefficient and vulnerable to bladder, and is especially difficult to deal with small prostate adenomas with tough texture, resulting in prolonged surgery time and high equipment costs.
A prostate tissue crusher is designed, including a cannula and a movable cutting electrode. The electrode wire forms a cage-like structure. Through the cooperation of the wire and the sheath, the electrode wire can be opened and contracted, which can efficiently cut prostate tissue and pass Connecting caps avoid short circuits and reduce equipment costs.
It improves the cutting efficiency of prostate tissue, simplifies surgical operations, reduces surgical time and equipment costs, and is suitable for various prostate tissues, including small prostate adenomas with tough texture.
Smart Images
Figure CN114271925B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a medical device, in particular to a prostate tissue pulverizer. Background Art
[0002] Transurethral prostatectomy has been widely used to treat benign prostatic hyperplasia (BPH). It is a new technology that is superior to "transurethral prostatectomy" and has great prospects. In the past, after prostatectomy, the surgeon needed to cut the large gland into small pieces and then flush them out, which was time-consuming and labor-intensive. In addition, if the removed gland entered the bladder, it would be more difficult to move the gland.
[0003] Currently, the solution to this problem is to use a tissue pulverizer, which can save surgical time and simplify surgical operations. However, traditional tissue pulverization technology has low pulverization and suction efficiency and is easy to damage the bladder. It is especially difficult to deal with small prostate adenomas with tough texture, which prolongs the operation time. In addition, the tissue pulverizer is a medical device that needs to be purchased separately, which is costly. Summary of the invention
[0004] A main purpose of the present invention is to provide a prostate tissue pulverizer, including a sleeve and a plurality of cutting electrodes movably arranged in the sleeve; the plurality of cutting electrodes are connected in pairs to form a conductive loop, the cutting electrodes include electrode wires, and the plurality of electrode wires form a cage-like structure outside the sleeve.
[0005] According to an embodiment of the present invention, the plurality of cutting electrodes are connected in pairs through the electrode wires.
[0006] According to an embodiment of the present invention, the cutting electrode comprises a conductive wire, the conductive wire is connected to the electrode wire, and the conductive wire is movably disposed in the sleeve.
[0007] According to an embodiment of the present invention, the sleeve is cylindrical, a plurality of through holes are formed in the sleeve, the through holes extend along the axial direction of the sleeve, and the wires are movably disposed in the through holes.
[0008] According to an embodiment of the present invention, the prostate tissue pulverizer includes a connection cap, the connection cap is located outside the sleeve, and the plurality of electrode wires are disposed on the connection cap.
[0009] According to an embodiment of the present invention, a plurality of unconnected channels are provided on the connection cap, and two connected electrode wires are arranged in the same channel.
[0010] According to an embodiment of the present invention, the two connected electrode wires are respectively located on two sides of the channel in which they are arranged.
[0011] According to one embodiment of the present invention, the connecting cap is a prism or a cylinder, and a plurality of the channels are provided between two bottom surfaces of the prism or the cylinder.
[0012] According to one embodiment of the present invention, the cage-like structure is spherical, ellipsoidal, lantern-shaped or spindle-shaped.
[0013] According to an embodiment of the present invention, the electrode wire is arc-shaped, spiral-shaped or S-shaped, or is composed of an arc line and line segments.
[0014] A prostate tissue pulverizer according to an embodiment of the present invention can cut prostate tissue into smaller volumes for easy removal from a human body. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always refer to the same or similar parts. Among them:
[0016] Figure 1 It is a schematic structural diagram of a prostate tissue pulverizer according to one embodiment of the present invention;
[0017] Figure 2 A top view of a sleeve, a conductor and a sheath according to an embodiment of the present invention;
[0018] Figure 3 It is a schematic structural diagram of a cutting electrode according to one embodiment of the present invention;
[0019] Figure 4A This is a schematic structural diagram of a connecting cap according to an embodiment of the present invention;
[0020] Figure 4B is a schematic cross-sectional view of a connection cap according to one embodiment of the present invention;
[0021] Figure 5 It is a schematic structural diagram of a prostate tissue pulverizer according to another embodiment of the present invention;
[0022] Figure 6 FIG. 1 is a top view of a handle according to an embodiment of the present invention. DETAILED DESCRIPTION
[0023] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustrative purposes rather than for limiting the present invention. In addition, the terms "upper", "lower", "lateral or transverse" and the like involved in the embodiments are all described in conjunction with the accompanying drawings and are not limitations on the features of the present invention.
[0024] like Figures 1 to 4B As shown, one embodiment of the present invention provides a prostate tissue pulverizer, including a sleeve 10 and a plurality of cutting electrodes 20 movably disposed in the sleeve 10; the plurality of cutting electrodes 20 are connected in pairs to form a conductive loop, each cutting electrode 20 includes a wire 21 and an electrode wire 22 connected to the wire 21, and the plurality of electrode wires 22 of the plurality of cutting electrodes 20 form a cage-like structure outside the sleeve 10.
[0025] The prostate tissue pulverizer according to one embodiment of the present invention enables the cutting electrode 20 to move within the sleeve 10 so that the electrode wire 22 can enter and extend from the sleeve 10 and realize the opening and contraction of the cage-like structure, thereby cutting and pulverizing the prostate tissue in the cage through the electrode wire 22.
[0026] In one embodiment, the plurality of cutting electrodes 20 can move freely along the axial direction of the sleeve 10 .
[0027] In one embodiment, the number of the plurality of cutting electrodes 20 is an even number, so as to facilitate connection in pairs. The present invention has no particular limitation on the number of cutting electrodes 20, and the number of cutting electrodes 20 can be at least two, such as 4, 6, 8, 10, etc.
[0028] In one embodiment, the sleeve 10 is cylindrical and made of insulating material. A plurality of through holes 11 are opened in the sleeve 10 for setting a plurality of cutting electrodes 20. Each cutting electrode 20 is set in a through hole 11. The through hole 11 can extend along the axial direction of the sleeve 10 and penetrate the sleeve 10.
[0029] In one embodiment, the number of the cutting electrodes 20 is the same as the number of the through holes 11 .
[0030] In one embodiment, a sheath 23 is disposed outside the wire 21 to provide protection. The sheath 23 may be tubular, such as cylindrical, and the wire 21 is fixedly disposed in the sheath 23 so that the wire 21 and the sheath 23 can enter and exit the casing 10 together.
[0031] In one embodiment, the sheath 23 is a hard cylinder with a fixed shape, and its material can be an insulating material, such as insulating plastic.
[0032] In one embodiment, one end of the electrode wire 22 is connected to the lead wire 21 , and the other end (the end) is connected to another electrode wire 22 , so that a conductive loop is formed between the two cutting electrodes 20 .
[0033] A prostate tissue pulverizer according to an embodiment of the present invention includes a connection cap 30 , in which a plurality of electrode wires 22 are disposed together, so that the plurality of electrode wires 22 can form a cage-like structure through the restraint of the connection cap.
[0034] In one embodiment, a plurality of channels 31 that are not interconnected are opened on the connection cap 30, and two connected electrode wires 22 are arranged in the same channel 31. Since the plurality of channels 31 are not interconnected, the setting of the connection cap 30 not only plays the role of restraining the electrode wires 22, but also can prevent the electrode wires 22 of a certain current loop from contacting with the electrode wires 22 on other current loops, thereby causing a short circuit.
[0035] In one embodiment, the two connected electrode wires 22 extend from two ends of the channel 31 respectively, or part or all of the two electrode wires 22 are located on two sides of the channel 31 respectively.
[0036] In one embodiment, the electrode wire 22 is movably disposed in the channel 31 of the connection cap 30 , that is, the connection cap 30 provides a range of movement for the electrode wire 22 , but does not fix the electrode wire 22 .
[0037] In one embodiment, the structural shape of the cage formed by the plurality of electrode wires 22 can be further adjusted by changing the position of the channel 31 on the connection cap 30 .
[0038] In one embodiment, the electrode wire 22 is fixedly disposed in the channel 31 of the connection cap 30 to maintain a cage-like structure, while preventing the electrode wire 22 from touching the internal tissue of the human body, thereby playing a protective role.
[0039] In one embodiment, the number of cutting electrodes 20 is twice the number of channels 31 .
[0040] In one embodiment, the plurality of channels 31 have different opening directions and are evenly distributed on the connection cap 30 , so that the plurality of electrode wires 22 can be evenly dispersed to form a cage-like structure with a regular shape.
[0041] The present invention has no particular limitation on the shape of the connection cap 30 , which may be a prism or a cylinder. The prism may be a triangular prism, a triangular prism, a pentagonal prism, a hexagonal prism, or the like.
[0042] like Figure 4A , 4BAs shown, the connecting cap 30 can be a triangular prism with a small height or thickness, preferably a regular triangular prism. Three unconnected channels 31 can be opened between the two bottom surfaces of the triangular prism. Each channel 31 is parallel to a side of the triangle. A pair of connected electrode wires 22 can be arranged in each channel 31, so that the cage-like structure of the pulverizer is surrounded by six electrode wires 22.
[0043] In one embodiment, the electrode wire 22 may be made of a conductive metal wire that is resistant to high temperatures, has toughness, and can undergo elastic deformation, so that the formed cage-like structure can crush and cut the prostate tissue under the action of contraction.
[0044] In one embodiment, if Figure 5 As shown, the electrode wire 22 is composed of oblique lines, vertical lines and arc lines.
[0045] In one embodiment, the electrode wire 22 is in a natural state when it is located outside the sleeve 10. When the cutting electrode 20 is pulled upward from the end of the wire 21, the wire 21 and the sheath 23 move upward along the sleeve 10, and the electrode wire 22 moves accordingly and enters the through hole 11 of the sleeve 10. Under the restraining effect of the through hole 11, its shape changes from a natural state to a straight line-like shape.
[0046] In one embodiment, the electrode wire 22 may be an elastic wire that has a specific shape in a natural state and can be elastically deformed, and its material may be an elastic alloy, such as nickel-titanium alloy, molybdenum, tungsten, etc.
[0047] In one embodiment, the electrode wire 22 can be Figure 1 As shown, the whole is arc-shaped, and it can also be Figure 5 As shown, it is composed of arc lines and line segments, or it can also be spiral, S-shaped, etc.
[0048] In one embodiment, the lateral dimension of the connection cap 30 is greater than the lateral dimension of the through hole 11 , that is, the dimension perpendicular to the axial direction of the sleeve 10 , so that after the electrode wire 22 is retracted into the through hole 11 , the connection cap 30 is still outside the sleeve 10 .
[0049] In one embodiment, the transverse cross-section of the connecting cap 30 is circular, and the diameter thereof is equal to the diameter of the sleeve 10 .
[0050] In one embodiment, the cage-shaped structure formed by the plurality of electrode wires 22 may be in a spherical shape, an ellipsoidal shape, a lantern shape, a spindle shape, or the like.
[0051] In one embodiment, the lengths and shapes of the plurality of electrode wires 22 may be different, and the specific shape of the cage-like structure may be adjusted by adjusting the lengths and shapes of the electrode wires 22 as a whole or individually.
[0052] In one embodiment, the shape of the cage structure can be adjusted by pulling one or two electrode wires 22 separately.
[0053] In one embodiment, a handle is provided at the end of the wire 21 of the cutting electrode 20 to facilitate the operation of the cutting electrode 20 to move forward and backward in the sleeve 10 .
[0054] In one embodiment, if Figure 6 As shown, the handle includes a disc and a handle 42 disposed on the disc. A plurality of grooves 41 are disposed around the disc for the sheath 23 to be clamped therein, and a handle 42 is disposed at the center of the disc. Each groove 41 is used to clamp a sheath 23. After all the wires 21 are clamped in the grooves 41 through the sheath 23, the handle 42 is held and moved along the axial direction of the sleeve 10, and all the cutting electrodes 20 can be driven to move accordingly.
[0055] In one embodiment, the groove 41 may be a circular groove with a notch, and the arc corresponding to the notch may have an arc angle of 30 to 150°, such as 45°, 60°, 75°, 90°, 120°, etc.
[0056] In one embodiment, the handle 42 is rod-shaped, and its length direction is the same as the axial direction of the sleeve 10 .
[0057] In one embodiment, the individual movement of one or more cutting electrodes 20 can be achieved by withdrawing one or more sheaths 23 from the handle.
[0058] When the prostate tissue pulverizer according to one embodiment of the present invention is used, it is inserted into the human body, and then the multiple electrode wires 22 are extended out of the sleeve 10 until the distance between the electrode wires 22 is maximized or large enough, so that the prostate tissue can enter the cage surrounded by the multiple electrode wires 22. Then, the wire 21 is pulled upward to gradually shrink the volume of the cage structure, and the multiple electrode wires 22 are in full contact with the prostate tissue. After power is turned on, the prostate tissue is cut into small pieces by the multiple electrode wires 22, and the small pieces of prostate tissue can be cut again until the volume is small enough to facilitate its removal from the human body.
[0059] The prostate tissue pulverizer according to one embodiment of the present invention can make the tissue pulverization technology easier to perform, improve the efficiency of pulverization, and reduce the cost.
[0060] The cutting electrode or prostate tissue pulverizer according to one embodiment of the present invention can be used in conjunction with common electrode equipment, has low cost, and is easy to promote.
[0061] Unless otherwise defined, the terms used in the present invention have the meanings commonly understood by those skilled in the art.
[0062] The embodiments described in the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Those skilled in the art may make various other substitutions, changes and improvements within the scope of the present invention. Therefore, the present invention is not limited to the above embodiments, but is only limited by the claims.
Claims
1. A prostate tissue pulverizer, It is characterized in that It comprises a sleeve and a plurality of cutting electrodes movably disposed in the sleeve; the plurality of cutting electrodes are connected in pairs to form a conductive loop, wherein the number of the cutting electrodes is an even number greater than 2; The cutting electrode comprises an electrode wire, the plurality of cutting electrodes are connected in pairs through the electrode wire, and the plurality of electrode wires form a cage-like structure outside the sleeve; the cutting electrode also comprises a wire, the wire is connected to the electrode wire, and the wire is movably arranged in the sleeve; the sleeve is cylindrical, and a plurality of through holes are opened in the sleeve, the through holes extend along the axial direction of the sleeve, and the wire is movably arranged in the through holes; and each cutting electrode is arranged in a through hole; A connecting cap, the connecting cap is located outside the sleeve, and a plurality of electrode wires are arranged on the connecting cap, Wherein, a plurality of unconnected channels are provided on the connection cap, and two connected electrode wires are movably arranged in the same channel, and the two connected electrode wires are respectively located on both sides of the channel in which they are arranged; the setting of the connection cap not only plays the role of restraining the electrode wires, but also prevents the electrode wires of a certain current loop from contacting with the electrode wires of other current loops, thereby causing a short circuit; Wherein, a sheath is arranged outside the wire; the wire is fixedly arranged in the sheath; A handle is provided at the wire end of the cutting electrode to facilitate the operation of the cutting electrode to move forward and backward in the sleeve; the handle includes a disc and a handle provided on the disc, and a plurality of grooves are provided along the four sides of the disc for the sheath to be clamped therein, and a handle is provided in the center of the disc, wherein each groove is used to clamp a sheath, and after all the wires are clamped in the grooves through the sheaths, the handle is held and moved along the axial direction of the sleeve, thereby driving all the cutting electrodes to move accordingly; by withdrawing one or several sheaths from the handle, the individual movement of one or several cutting electrodes can be realized.
2. The prostate tissue pulverizer according to claim 1, It is characterized in that The connecting cap is a prism or a cylinder, and a plurality of the channels are provided between two bottom surfaces of the prism or the cylinder.
3. The prostate tissue pulverizer according to claim 1, It is characterized in that The cage-like structure is in the shape of a sphere, an ellipsoid, a lantern or a spindle.
4. The prostate tissue pulverizer according to claim 1, It is characterized in that The electrode wire is arc-shaped, spiral-shaped or S-shaped, or is composed of an arc line and line segments.