CN114259285A - Fixed surgical instruments subassembly of kidney puncture - Google Patents
Fixed surgical instruments subassembly of kidney puncture Download PDFInfo
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- CN114259285A CN114259285A CN202111587084.XA CN202111587084A CN114259285A CN 114259285 A CN114259285 A CN 114259285A CN 202111587084 A CN202111587084 A CN 202111587084A CN 114259285 A CN114259285 A CN 114259285A
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Abstract
The invention discloses a kidney puncture fixing surgical instrument assembly which comprises a puncture gun and a barbed wire assembly, wherein the puncture gun comprises a gun barrel, a strip-shaped hole parallel to the barrel center line of the gun barrel is formed in the gun barrel, a puncture needle is arranged in the gun barrel in a sliding manner, the tip of the puncture needle penetrates out of the front end of the gun barrel, an operating rod is fixedly connected to the tail end of the puncture needle, and the free end of the operating rod extends out of the strip-shaped hole; a bolt is arranged in the gun barrel in a sliding way, the bolt is fixedly connected with a push rod, and the handle end of the push rod extends out of the rear end of the gun barrel; the barbed wire component is movably arranged in the puncture needle in a penetrating way, and one end of the barbed wire component, which corresponds to the bolt, is detachably connected with the bolt; the barbed wire assembly includes a first and second coupling region provided with barbs, the direction of the barbs in the first and second coupling regions being opposite. Compared with the prior art, the invention has the beneficial effects that: provides an easy-to-use tool assembly for the puncture fixing operation of a nephroptosis patient.
Description
Technical Field
The invention belongs to the technical field of surgical instruments, and particularly relates to a kidney puncture fixing surgical instrument assembly.
Background
The range of motion of the kidney of an ordinary person is 1-2 cm, and the range of motion of the kidney of a patient with nephroptosis exceeds the normal range due to the congenital development problem, so that the kidney cannot be kept at the normal anatomical position of the waist. Nephroptosis is often accompanied by changes in various renal pathologies and may also affect the normal function of other organs, leading to complications such as obstructed urinary drainage, abnormal renal blood supply, and hypertensive renal calculus. The patients have symptoms of waist soreness, lumbago, waist distention, hematuria, etc.
The traditional nephroptosis operation needs to be performed by an operation or a minimally invasive operation by using a laparoscope to perform nephroptosis fixation, and usually adopts a way of passing through an abdominal cavity or a retroperitoneum, and a renal capsule is fixed at the positions of the psoas major muscle and the like by sewing with a needle thread from top to bottom from the outside to form a hanging basket consisting of fat and fascia so as to fix the kidney. However, since the kidney belongs to an extraperitoneal organ, is not isolated from the abdominal cavity but is surrounded by multiple perirenal fascia tissues, the kidney needs to be completely isolated from the tissues in the operation, the operation is complicated and has large wound, and postoperative surgical complications may occur due to the injury of muscles, nerves and the like in the operation, so that the patient feels abnormal, such as lumbago, numbness of an operation area and the like for a long time, and a long recovery period is needed. Because the operation is complicated and takes longer (usually more than 2 hours), the local anesthesia can not meet the operation requirement, general anesthesia is usually adopted for operation, the anesthesia risk is higher, and even some patients can not receive the operation because the patients can not bear general anesthesia due to the physical reasons of some basic diseases (hypertension, diabetes, heart disease and the like). In addition, the costs required for the entire operation and postoperative recovery are high, giving rise to increased patient treatment costs or increased medical insurance expenditure burden.
In view of the current situation, the inventor proposes a treatment approach of positioning the kidney by means of imaging means such as CT and B-ultrasonic based on the concept of interventional therapy and then fixing the kidney by an implantation instrument. To this end, a renal puncture fixing surgical instrument assembly is provided.
Disclosure of Invention
In view of the above, the present invention provides a renal biopsy fixation surgical instrument assembly.
The technical scheme is as follows:
the kidney puncture fixing surgical instrument assembly is characterized by comprising a puncture gun and a barbed wire assembly, wherein the puncture gun comprises a gun barrel, the front end and the rear end of the gun barrel are arranged at the two ends of the gun barrel respectively, a strip-shaped hole is formed in the gun barrel and is parallel to the barrel center line of the gun barrel, a puncture needle is arranged in the gun barrel and is in sliding fit with the inner cavity of the gun barrel, the pointed end of the puncture needle penetrates out of the front end of the gun barrel, an operating rod is fixedly connected with the tail end of the puncture needle, one end of the operating rod is fixedly connected with the puncture needle, and the other end of the operating rod extends out of the strip-shaped hole;
a bolt is arranged in the gun barrel in a sliding manner, the bolt is fixedly connected with a push rod, and the handle end of the push rod extends out of the rear end of the gun barrel;
the barbed wire assembly is movably arranged in the puncture needle in a penetrating way, and one end of the barbed wire assembly, which corresponds to the bolt, is detachably connected with the bolt;
the barbed wire assembly includes first and second coupling regions provided with barbs, the barbs in the first and second coupling regions being in opposite directions.
Compared with the prior art, the invention has the beneficial effects that: the barb line that the means of conveniently will have two opposite directions's barb district through skin puncture sends into internally to upwards carry the pulling with patient's kidney and hang on the psoas major, provide easy to use's instrument subassembly for this kind of range of application is wider, the wound is littleer, resume faster art formula.
Drawings
FIG. 1 is a schematic structural view of the present invention illustrating the barbed wire assembly removed from the piercing gun;
FIG. 2 is a schematic view of the barbed wire assembly installed in a piercing gun;
FIG. 3 is an enlarged view of the portion m1 in FIG. 2;
FIG. 4 is an enlarged view of the portion m2 in FIG. 2;
fig. 5 is a schematic view of a barbed line.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1 and 2, a kidney puncture fixed surgical instrument subassembly, including puncture gun 200 and barb line subassembly 100, puncture gun 200 includes a gun section of thick bamboo 210, the both ends of a gun section of thick bamboo 210 are front end and rear end respectively, a bar hole 211 has been seted up on a gun section of thick bamboo 210, this bar hole 211 with the tube core line of a gun section of thick bamboo 210 is parallel, be provided with pjncture needle 220 in the gun section of thick bamboo 210, this pjncture needle 220 with the inner chamber sliding fit of a gun section of thick bamboo 210, the most advanced of this pjncture needle 220 is followed the front end of a gun section of thick bamboo 210 is worn out, the tail end fixedly connected with action bars 221 of this pjncture needle 220, the one end of this action bars 221 with pjncture needle 220 fixed connection, the other end outwards stretches out bar hole 211, the lateral surface of this action bars 221 pastes the both sides wall of bar hole 211 to keep stable slip. A bolt 230 is slidably disposed within the barrel 210, the bolt 230 having a push rod 231 fixedly attached thereto, a handle end of the push rod 231 extending from a rear end of the barrel 210. The barbed wire assembly 100 is movably arranged in the puncture needle 220 in a penetrating manner, and one end of the barbed wire assembly 100, corresponding to the bolt 230, is detachably connected with the bolt 230, so that the barbed wire assembly is kept in a state of being arranged along the axial direction of the puncture needle 220.
In order to prevent the puncture needle 220 from retracting during puncture, a non-return hole 212 is formed in the side wall of the end part of the bar-shaped hole 211 close to the front end of the gun barrel 210, and the non-return hole 212 is communicated with the bar-shaped hole 211 to allow the puncture needle 220 to rotate so that the push rod 231 enters the non-return hole 212 from the bar-shaped hole 211.
As shown in fig. 1, an end plate 215 is disposed at the front end of the gun barrel 210, a sliding hole is disposed on the end plate 215, the sliding hole is adapted to the outer wall of the puncture needle 220, and the puncture needle 220 is slidably disposed in the sliding hole. Specifically, the front end of the gun barrel 210 extends forwards beyond an end plate 215, a sleeve 213 is connected to the outer side surface of the end plate 215, the tube center line of the sleeve 213 is parallel to the tube center line of the gun barrel 210, the inner hole of the sleeve 213 forms the sliding hole, a reinforcing rib 214 is connected between the outer wall of the sleeve 213 and the inner wall of the gun barrel 210, the reinforcing rib 214 is located in the radial plane of the sleeve 213, and at least two reinforcing ribs 214 are uniformly distributed around the outer wall of the sleeve 213.
As shown in fig. 2, a support ring 223 is fixedly sleeved outside the puncture needle 220, the support ring 223 is close to the operating rod 221, the support ring 223 and the slide hole share a common hole center line, and the outer circular surface of the support ring 223 is in sliding fit with the inner wall of the gun barrel 210.
Thus, the puncture needle 220 itself is slidably fitted to the sleeve 213, and is stably slid back and forth by fitting the support ring 223 to the inner wall of the barrel 210.
Referring to fig. 1, the barbed wire assembly 100 includes a hard barbed wire 110, the barbed wire 110 includes a wire body 111, the wire body 111 is provided with first and second catching regions 112 and 113 at intervals, outer walls of the first and second catching regions 112 and 113 are respectively provided with barbs 114, wherein tips of the barbs 114 on the first catching region 112 extend laterally outward and are offset toward the second catching region 113, and tips of the barbs 114 on the second catching region 113 extend laterally outward and are offset toward the first catching region 112. The barbed wire 110 is inserted into the puncture needle 220. One end of the thread body 111 is detachably connected with a rigid positioning rod 120, one end of the positioning rod 120 is clamped with the thread body 111, and the other end of the positioning rod 120 is connected with the bolt 230.
The first hanging region 112 is located at one end of the wire body 111 corresponding to the needle tip of the puncture needle 220.
The length of the barb 114 in the first attachment region 112 closest to the end of the wire body 111 is greater than the length of the remaining barbs 114.
As shown in fig. 1, 2 and 3, a reducing groove 115 is formed on an end surface of the thread body 111 away from the first hanging area 112, and the reducing groove 115 is a through groove transversely penetrating through the thread body 111. A necking down chuck 121 is processed at one end of the positioning rod 120 corresponding to the wire body 111, the necking down chuck 121 is matched with the shape of the necking down groove 115, and the necking down chuck 121 is clamped in the necking down groove 115. In another embodiment, as shown in fig. 5, the wire body 111 is a hollow wire, a metal wire 117 capable of being drawn out is disposed in the inner cavity of the wire body 111, the metal wire 117 extends from an end of the wire body 111 away from the first hanging region 112, a clamping seat 116 made of an elastic polymer material is fixedly connected to an end of the metal wire 117 extending out of the wire body 111, and a portion of the metal wire 117 extends into the clamping seat 116 and spirally extends inside the clamping seat, so as to improve the connection firmness of the metal wire 117 and the clamping seat. The holder 116 is columnar and is disposed along the axial direction of the wire body 111, and the outer diameter of the holder 116 is close to the wire body. The end surface of the clamping seat 116 close to the wire body 111 is connected with the corresponding end of the wire body 111 through at least one connection point 118, and the connection point 118 may be formed by local melting connection of the wire body 111 and the clamping seat 116 during machining. Preferably, a plurality of connection points 118 are spaced around the wire 117. A necking groove 115 is formed on the end surface of the clamping seat 116 away from the wire body 111. Because the clamping seat 116 has elasticity, the necking clamp 121 is easier to clamp into the necking groove 115, and meanwhile, the necking groove 115 holds the necking clamp 121 and is not easy to fall off.
The purpose of setting up wire 117 in line body 111 is in order to make line body 111 keep certain rigidity, guarantees that barb line 110 is difficult for buckling in the installation, and after taking out wire 117, barb line 110 rigidity reduces, and the compliance improves, more can adapt to the morphological change of implanting the position tissue after implanting the human body. For the lifting and fixing of the kidney, the diameter of the wire body 111 can be larger than that of a conventional operation suture wire, such as 1.0-1.5 mm, and the inner diameter of the wire body 111 can be 0.2-0.4 mm. The wire 117 has a smooth surface, and the diameter of the wire 117 is slightly smaller than the inner diameter of the wire body 111 to reduce resistance when the wire 117 is withdrawn. To prevent the wire body 111 from slipping off the wire 117 during transportation or use, the wire body 111 is connected to the holder 116 at a connection point 118. After barbed wire 110 is embedded in place, clip 116 may be conveniently separated from wire body 111 by pulling or twisting to break connection points 118.
One way of mounting the positioning rod 120 and the bolt 230 is: as shown in fig. 1 and 2, a blind positioning hole 232 is formed on a surface of the bolt 230 facing the puncture needle 220, the blind positioning hole 232 and the puncture needle 220 share a common hole center line, and a corresponding end of the positioning rod 120 is inserted into the blind positioning hole 232. The bolt 230 may be made of a rubber material, and the outer circumferential surface of the bolt 230 engages the inner wall of the barrel 210 and has a sliding resistance such that the bolt 230 remains positioned within the barrel 210 when the lever 221 is not under a pushing or pulling force. The positioning rod 120 can be a metal wire with high rigidity, and the end of the positioning rod 120 is inserted into the positioning blind hole 232 and is in interference fit with the positioning blind hole, so that the positioning rod is not easy to fall off.
As shown in fig. 2, in order to facilitate the injection of the drug into the puncture site through the puncture needle 220, an administration hole is axially formed through the operating rod 221, an inner end of the administration hole communicates with an inner hole of the puncture needle 220, and an end cap 222 is fastened to an outer end of the administration hole. The length of the barbed wire 110 is less than the length of the piercing needle 220. The positioning rod 120 penetrates out from the tail end of the puncture needle 220, a sealing plug 240 is arranged at the tail end of the puncture needle 220, the sealing plug 240 is inserted into an inner hole at the tail end of the puncture needle 220, a through hole penetrates through the center of the sealing plug 240, and the positioning rod 120 penetrates through the through hole.
Thus, the sealing plug 240 prevents the drug from leaking into the barrel 210 when the drug is infused through the administration port. In order to improve stability, the inner hole wall of the tail end of the puncture needle 220 is provided with threads, and the sealing plug 240 is not easy to fall off after being plugged.
The sealing plug 240 is made of an elastic material, and one specific structure of the sealing plug 240 is as follows: as shown in fig. 4, the puncture needle comprises a cylindrical outer sheath 241, an annular piece 242 is integrally formed in the outer sheath 241, the annular piece 242 and the outer sheath 241 are coaxial, the outer edge of the annular piece 242 is connected with the inner wall of the outer sheath 241, an inner sheath 243 is integrally formed at the inner edge of the annular piece 242, one end of the inner sheath 243 is connected with the inner edge of the annular piece 242, and the other end extends towards the needle point of the puncture needle 220.
The outer wall of the outer circular sleeve 241 is attached to the inner wall of the inner hole of the puncture needle 220, and the inner wall of the inner circular sleeve 243 is attached to the surface of the positioning rod 120. An annular deformation yielding area 244 is defined by the inner circular sleeve 243, the outer circular sleeve 241 and the annular sheet 242. The thickness of the ring-shaped piece 242 and the inner circular sleeve 243 is smaller than that of the outer circular sleeve 241, and the deformation is easy. This design allows for flexible sliding of the positioning stem 120 relative to the sealing plug 240. Meanwhile, when liquid is infused through the administration hole, after the liquid enters the deformation yielding area 244, the inner circular sleeve 243 is enabled to be attached to the surface of the positioning rod 120 more tightly under certain liquid pressure, and the sealing performance is improved.
The kidney puncture fixing surgical instrument component is suitable for kidney puncture fixing surgery, and the principle of the surgery is as follows: the barbs 114 in the first and second attachment areas 112 and 113 on the barbed wire 110 are opposite in direction, and the barbed wire 110 can move along the barbs 114 in only one direction, so that the barbs 114 in the first and second attachment areas 112 and 113 respectively hook the kidney and the psoas major, the barbed wire 110 cannot move due to mutual traction, and the enlarged barbs 114 at the extreme end of the first attachment area 112 provide a large traction force, thereby fixing the kidney. The length of the first hanging area 112 is 1.2-1.5 cm, and the length of the second hanging area 113 is 3.5-4.5 cm. The barbed wire 110 may be made of a medical polymer material that has been used clinically. The strand body surface of the barbed strand 110 is smooth.
The specific operation process is as follows: the barbed wire 110 is snap-fitted to the positioning rod 120, and then the sealing plug 240 is fitted over the positioning rod 120 from the smooth end of the positioning rod 120, and the deformation relief area 244 on the sealing plug 240 is opened toward the barbed wire 110. The corresponding end of the positioning rod 120 is then inserted into the blind positioning hole 232, the barbed wire assembly 100 and the bolt 230 are then fed from the rear end of the barrel 210, the barbed wire 110 is advanced into the piercing needle 220, and the bolt 230 is positioned so that the first attachment region 112 reaches the vicinity of the tip of the piercing needle 220. To allow sufficient retraction of the needle 220, the positioning rod 120 is longer than the slot 211 so that the bolt 230 is positioned between the slot 211 and the rear end of the barrel 210 in preparation for piercing. Finally, the sealing plug 240 is slid along the positioning rod 120 and inserted into the end of the puncture needle 220.
In order to facilitate the loading of the barbed wire 110 into the puncture needle 220, a smooth protective sheath 130 may be further provided around the barbed wire 110, the protective sheath 130 completely covers the first hitching section 112 and the second hitching section 113 on the barbed wire 110, and one end portion thereof exceeds one end of the first hitching section 112, and the other end portion thereof is sleeved outside the clamping seat 116, so as to prevent the necking head 121 from being laterally removed from the necking groove 115. After loading the barbed wire 110 into the piercing needle 220, the protective sheath 130 is partially extended out of the tip of the piercing needle 220, and then the protective sheath 130 is removed.
When puncturing, the puncture needle 220 is pushed forward so that the operation rod 221 reaches the foremost end of the bar-shaped hole 211, and is rotated into the non-return hole 212, and the puncture gun 200 is kept in this state for puncturing. A puncture needle 220 of an appropriate length may be used so that the forward end of the barrel 210 just abuts the skin surface after the needle tip of the puncture needle 220 enters the kidney to maintain a stable position. After the puncture needle 220 is confirmed to enter the kidney through the image, the operation rod 221 is pushed to rotate the puncture needle 220, the operation rod 221 exits the non-return hole 212, the puncture needle 220 is retracted, the first hanging area 112 is exposed out of the puncture needle 220, and the barb 100 in the first hanging area 112 pierces the kidney tissue. The puncture needle 220 is continuously retracted until the needle tip is positioned in the adipose tissue between the kidney and the waist muscle, the end cap 222 is opened, and the puncture needle 220 is injected with a medical hardening agent such as absolute alcohol, so that the kidney is adhered to the adipose tissue, and the fixation effect is enhanced. Next, the needle 220 is retracted out of the skin and the barbs 100 in the second landing areas 113 penetrate the lumbar musculature. The line body 111 of the barbed line 110 of the second attachment area 113 facing away from the first attachment area 112 is exposed to the skin. The positioning rod 120 is pulled outward or the holder 116 is held by forceps, and the wire 117 is pulled out from the wire body 111. Finally, the barbed wire 110 is pulled slightly outwards, skin tissues around the barbed wire 110 are pressed downwards by scissors, the redundant wire body is cut off by adhering to the surface of the skin, the skin rebounds, and the residual end of the wire body 111 is immersed into the subcutaneous part.
Because two or more fixing points may be needed for fixing the kidney at one side, after the fixing of one puncture is completed, the line body stub is taken down from the positioning rod 120, and then the barbed line 110 is installed, so that the puncture fixing of the next point can be performed.
By means of the surgical instrument assembly, the operation is performed under local anesthesia, and compared with the general anesthesia state in the traditional operation, the risk of anesthesia to a patient is reduced; the kidney is prevented from being completely stripped from the muscle, the wound is reduced, and the operation risk and postoperative complications are reduced; the fixing operation of nephroptosis can be carried out on some patients who cannot tolerate the major operation; the postoperative patient can recover quickly without the problems of lumbago for a long time and the like.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (10)
1. A kidney puncture fixing surgical instrument assembly is characterized in that: the puncture gun comprises a puncture gun (200) and a barbed wire assembly (100), wherein the puncture gun (200) comprises a gun barrel (210), the front end and the rear end of the gun barrel (210) are arranged at the two ends of the gun barrel respectively, a strip-shaped hole (211) is formed in the gun barrel (210), the strip-shaped hole (211) is parallel to the barrel center line of the gun barrel (210), a puncture needle (220) is arranged in the gun barrel (210), the puncture needle (220) is in sliding fit with the inner cavity of the gun barrel (210), the tip of the puncture needle (220) penetrates out of the front end of the gun barrel (210), an operating rod (221) is fixedly connected to the tail end of the puncture needle (220), one end of the operating rod (221) is fixedly connected with the puncture needle (220), and the other end of the operating rod (221) extends out of the strip-shaped hole (211);
a bolt (230) is slidably arranged in the gun barrel (210), a push rod (231) is fixedly connected to the bolt (230), and the handle end of the push rod (231) extends out of the rear end of the gun barrel (210);
the barbed wire assembly (100) is movably arranged in the puncture needle (220) in a penetrating way, and one end, corresponding to the bolt (230), of the barbed wire assembly (100) is detachably connected with the bolt (230);
the barbed wire assembly (100) comprises a first (112) and a second (113) coupling region provided with barbs (114), the barbs (114) in the first (112) and second (113) coupling regions being in opposite directions.
2. The renal puncture fixation surgical instrument assembly of claim 1, wherein: the side wall of the end part of the strip-shaped hole (211) close to the front end of the gun barrel (210) is provided with a non-return hole (212), and the non-return hole (212) is communicated with the strip-shaped hole (211) to allow the puncture needle (220) to rotate so as to enable the push rod (231) to enter the non-return hole (212) from the strip-shaped hole (211).
3. The renal puncture fixation surgical instrument assembly of claim 2, wherein: an end plate (215) is arranged at the front end of the gun barrel (210), a sliding hole is formed in the end plate (215), the sliding hole is matched with the outer wall of the puncture needle (220), and the puncture needle (220) penetrates through the sliding hole in a sliding mode;
a support ring (223) is fixedly sleeved outside the puncture needle (220), the support ring (223) is close to the operating rod (221), the support ring (223) and the sliding hole share a hole center line, and the outer circular surface of the support ring (223) is in sliding fit with the inner wall of the gun barrel (210).
4. The renal puncture fixation surgical instrument assembly of claim 1, wherein: the barbed wire assembly (100) comprises a hard barbed wire (110), the barbed wire (110) comprises a wire body (111), the wire body (111) is provided with the first hanging area (112) and the second hanging area (113) at intervals, the outer walls of the first hanging area (112) and the second hanging area (113) are respectively provided with the barbs (114), wherein the tips of the barbs (114) on the first hanging area (112) extend outwards transversely and are offset towards the second hanging area (113), and the tips of the barbs (114) on the second hanging area (113) extend outwards transversely and are offset towards the first hanging area (112);
the barbed wire (110) is arranged in the puncture needle (220) in a penetrating way;
one end of the wire body (111) is detachably connected with a rigid positioning rod (120), one end of the positioning rod (120) is clamped with the wire body (111), and the other end of the positioning rod (120) is connected with the bolt (230).
5. The renal puncture fixation surgical instrument assembly of claim 4, wherein: the first hanging region (112) is located at one end, corresponding to the needle point of the puncture needle (220), of the wire body (111), a necking groove (115) is formed in the end face, away from the first hanging region (112), of the wire body (111), and the necking groove (115) is a through groove transversely penetrating through the wire body (111);
the positioning rod (120) is provided with a necking-down chuck (121) corresponding to one end of the wire body (111), the necking-down chuck (121) is matched with the shape of the necking-down groove (115), and the necking-down chuck (121) is clamped into the necking-down groove (115).
6. The renal puncture fixation surgical instrument assembly of claim 5, wherein: the wire body (111) is a hollow wire, a metal wire (117) capable of being drawn out is arranged in the wire body (111), the metal wire (117) extends out from the end part of the wire body (111) far away from the first hanging connection area (112), one end of the metal wire (117) extending out of the wire body (111) is fixedly connected with a clamping seat (116) made of elastic materials, and the end face of the clamping seat (116) far away from the wire body (111) is provided with the necking groove (115).
7. The renal puncture fixation surgical instrument assembly of claim 4, wherein: the surface of the bolt (230) facing the puncture needle (220) is provided with a positioning blind hole (232), the positioning blind hole (232) and the puncture needle (220) share a hole center line, and the corresponding end part of the positioning rod (120) is inserted into the positioning blind hole (232).
8. The renal puncture fixation surgical instrument assembly of claim 4, wherein: the positioning rod (120) penetrates out of the tail end of the puncture needle (220), a sealing plug (240) is arranged at the tail end of the puncture needle (220), the sealing plug (240) is inserted into an inner hole at the tail end of the puncture needle (220), a through hole penetrates through the center of the sealing plug (240), and the positioning rod (120) penetrates through the through hole;
an administration hole axially penetrates through the operating rod (221), the inner end of the administration hole is communicated with the inner hole of the puncture needle (220), and the outer end of the administration hole is covered with an end cover (222).
9. The renal puncture fixation surgical instrument assembly of claim 8, wherein: the sealing plug (240) is made of elastic material and comprises a cylindrical outer circular sleeve (241), an annular sheet (242) is integrally formed in the outer circular sleeve (241), the annular sheet (242) and the outer circular sleeve (241) have a coaxial line, the outer edge of the annular sheet (242) is connected with the inner wall of the outer circular sleeve (241), an inner circular sleeve (243) is integrally formed at the inner edge of the annular sheet (242), one end of the inner circular sleeve (243) is connected with the inner edge of the annular sheet (242), and the other end of the inner circular sleeve (243) extends towards the needle point direction of the puncture needle (220);
the outer wall of the outer circular sleeve (241) is attached to the inner wall of the inner hole of the puncture needle (220), and the inner wall of the inner circular sleeve (243) is attached to the surface of the positioning rod (120);
an annular deformation yielding area (244) is defined by the inner circular sleeve (243), the outer circular sleeve (241) and the annular sheet (242);
the thickness of the annular sheet (242) and the thickness of the inner circular sleeve (243) are both smaller than that of the outer circular sleeve (241).
10. The renal puncture fixation surgical instrument assembly of claim 5, wherein: the length of the first hanging area (112) is 1.2-1.5 cm, and the length of the second hanging area (113) is 3.5-4.5 cm.
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| CN114259285B (en) | 2024-03-01 |
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