A tunnel needle auxiliary device for peritoneal dialysis surgery

Abstract

The present invention belongs to the technical field of peritoneal dialysis surgical devices, and specifically is a tunnel needle auxiliary device for peritoneal dialysis surgery, including a fixed frame, one side of which is fixedly connected to a first telescopic rod distributed in a linear array, the telescopic ends of the first telescopic rods distributed in the linear array are commonly fixedly connected to a connecting ring, the connecting ring is rotatably connected to a fixed cylinder through the connecting rod, and the upper side of the fixed cylinder is slidably connected to a sliding ring. The present invention limits the removal position of the tunnel needle by covering the tunnel needle with a fixed cylinder to prevent the tunnel needle from stabbing medical staff when it is removed, and wraps the head of the tunnel needle by shrinking the lower side of the protective cover to prevent the sharp part of the tunnel needle from stabbing medical staff during the subsequent separation of the tunnel needle, so as to solve the problem that when the tunnel needle is removed from the patient's subcutaneous tissue, the blood exuded from the removed part of the tunnel needle will affect the medical staff's judgment on the removal position of the tunnel needle, thereby threatening the safety of the medical staff.

Description

Technical Field

[0001] The invention belongs to the technical field of peritoneal dialysis surgical devices, and in particular relates to a tunnel needle auxiliary device for peritoneal dialysis surgery. Background Art

[0002] The tunnel needle for peritoneal dialysis is a medical device specifically used for peritoneal dialysis (PD). Peritoneal dialysis is a method of treating kidney function (such as uremia), and the tunnel needle is a metal needle with a special structure to adapt to peritoneal dialysis surgery. Its function is to create a "subcutaneous tunnel" in the patient's abdomen so that the peritoneal dialysis catheter can be safely placed and fixed in the appropriate position of the abdomen. When using the tunnel needle to perform peritoneal dialysis on a patient, the tunnel needle passes through the subcutaneous tissue along a pre-planned path to form a "subcutaneous tunnel", and then the peritoneal dialysis catheter is introduced into the formed "subcutaneous tunnel" through the tunnel needle. The catheter is gradually guided into the abdominal cavity. After the catheter reaches the correct position, the tunnel needle is carefully removed and the catheter is left in place.

[0003] During the process of removing the tunnel needle, the tunnel needle will be moved out from the patient's subcutaneous tissue, which will cause blood to seep out of the removal site, thereby affecting the medical staff's judgment on the removal site of the tunnel needle. If the judgment is wrong, the tunnel needle may easily scratch the medical staff, thereby threatening the safety of the medical staff. Summary of the invention

[0004] The purpose of the present invention is to provide a tunnel needle auxiliary device for peritoneal dialysis surgery to solve the defects pointed out in the above background technology.

[0005] The technical implementation scheme of the present invention is: a tunnel needle auxiliary device for peritoneal dialysis surgery, comprising a fixed frame, one side of the fixed frame is fixedly connected to a first telescopic rod distributed in a linear array, the telescopic ends of the first telescopic rods distributed in the linear array are commonly fixedly connected to a connecting ring, the connecting ring is rotatably connected to a fixed cylinder through a connecting rod, the upper side of the fixed cylinder is slidably connected to a sliding ring, a spring is arranged between the sliding ring and the fixed cylinder, the sliding ring is located in the lower side of the fixed cylinder and is slidably connected to a limiting seat, the lower side of the limiting seat is fixedly connected to a protective cover located in the fixed cylinder, the fixed cylinder is slidably connected to a first limiting block distributed in a circular array, and the opposite sides of the first limiting blocks distributed in the circular array are fixedly connected to elastic ropes fixed to the lower side of the protective cover.

[0006] Furthermore, the sliding ring is slidably connected to a side close to its axis with a second limit block distributed in a ring array, and the opposite sides of the second limit blocks distributed in the ring array are both limitedly matched with the limit seat, a spring is arranged between the second limit block and the sliding ring, and the upper side of the interior of the fixed cylinder is fixedly connected to a fixed block distributed in a ring array, and the lower side of the fixed block passes through the sliding ring and is extruded and matched with the adjacent second limit block, and the sliding ring is fixedly connected to a magnetic suction piece distributed in a ring array, and the magnetic suction piece is magnetically matched with the adjacent second limit block.

[0007] Furthermore, the lower side of the sliding ring is fixedly connected with limiting rods distributed in an annular array, the lower side of the limiting rods is limitedly matched with the adjacent first limiting blocks, and the limiting rods distributed in an annular array are all located outside the fixed tube.

[0008] Furthermore, the fixed cylinder is slidably connected to a sliding frame distributed in a circular array, a spring is arranged between the sliding frame and the fixed cylinder, the sliding frames distributed in the circular array are all located below the first limit block distributed in the circular array, the sliding frames are limitedly cooperated with the adjacent limit rods, and the first elastic airbag is fixedly connected to one side of the sliding frames distributed in the circular array located in the fixed cylinder.

[0009] Furthermore, a fixing ring located at the lower side of the sliding frame distributed in a ring array is fixedly connected in the fixing cylinder, and the fixing ring is provided with a truncated cone groove, and the diameter of the lower side of the truncated cone groove in the fixing ring is greater than the diameter of the upper side.

[0010] Furthermore, the fixing frame and the connecting ring are both fixedly connected with mirror-distributed second elastic airbags and mirror-distributed suction cups, and the upper side of the suction cup is connected to the adjacent second elastic airbag.

[0011] Furthermore, it also includes second telescopic rods distributed in a linear array, the second telescopic rods distributed in a linear array are all fixedly connected to the upper side of the fixed frame, the telescopic ends of the second telescopic rods distributed in a linear array are commonly fixedly connected to a sliding frame, the sliding frame is fixedly connected to a guide plate distributed in a mirror image, the sliding frame is provided with an L-shaped groove distributed in a mirror image, the sliding frame is slidably connected to a sliding member distributed in a mirror image and in a linear array, the sliding members distributed in a linear array are all slidably matched with adjacent L-shaped grooves, a connecting member is hinged between two adjacent sliding members through a hinge rod, the lower sides of the sliding members distributed in a linear array are all fixedly connected to a fixed frame, the lengths of the fixed frames distributed in a linear array are inconsistent, a first elastic telescopic member is provided on one side of the fixed frame close to the adjacent guide plate, the upper side of the telescopic portion of the first elastic telescopic member is fixedly connected to a contact rod that is extruded and matched with the adjacent guide plate, the telescopic end of the first elastic telescopic member is fixedly connected to the second elastic telescopic member, and the telescopic end of the second elastic telescopic member is fixedly connected to the fixed rod.

[0012] Furthermore, the fixed frame is slidably connected to a fixed column, and the fixed frame is in contact with and cooperates with the adjacent fixed column. A mirror-imaged rotating rod distributed in a linear array is provided below the sliding frame. Half of the rotating rods distributed in the linear array are rotationally cooperated with the adjacent fixed frame. The rotating rods rotationally cooperated with the fixed frame are provided with a threaded portion, and the threaded portion is threadedly cooperated with the adjacent fixed column. The remaining rotating rods in the linear array are transmission-connected to the adjacent rotating rods through a universal joint. An L-shaped frame is fixedly connected to the lower side of the fixed column, and the side of the L-shaped frame away from the adjacent fixed column is fixedly connected to the adjacent first elastic telescopic member.

[0013] Furthermore, the middle portion of the universal joint and the connecting portion of two adjacent connecting members are located on the same vertical line.

[0014] Furthermore, the pitches of the threaded portions that are mirrored and distributed in a linear array increase in a step-like manner from the opposite sides to the opposite sides.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention limits the removal position of the tunnel needle by covering the tunnel needle with a fixed cylinder, so as to prevent the tunnel needle from stabbing medical staff when it is removed, and wraps the head of the tunnel needle by contracting the lower side of the protective cover, so as to prevent the sharp part of the tunnel needle from stabbing medical staff in the subsequent process of separating the tunnel needle. When the sharp part of the tunnel needle is wrapped, the sliding frames of the annular array move toward each other to fix the tunnel needle, so that the tunnel needle and the fixed cylinder become a "whole", and then the fixed cylinder and the tunnel needle are "actively removed" from the patient's muscle tissue, so that the tunnel needle is separated from the patient's muscle tissue, thereby "taking out" the tunnel needle; in the process of treating the patient's folds, The sliding direction of the fixing rod is changed by the cooperation of the sliding part and the L-shaped groove, so as to imitate the principle of "transplanting rice seedlings" to "leave" the fixing rod on the patient's skin, and the contact rod and the fixing rod are pulled on the patient's wrinkled skin by the cooperation of the guide plate and the contact rod, so that the patient's wrinkled skin is stretched, thereby facilitating medical staff to operate the tunnel needle. In the process of stretching the patient's wrinkled skin, the second elastic telescopic part cooperates with the adjacent fixing rod to prevent the fixing rod from over-stretching the patient's skin, and the two adjacent fixing rods are moved away from each other by the rotation of the rotating rod, so as to achieve lateral stretching of the patient's wrinkled skin and improve the flatness of the patient's wrinkled skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0018] Figure 2 It is a bottom-up three-dimensional structural schematic diagram of the present invention;

[0019] Figure 3 It is a bottom-up stereoscopic structural schematic diagram of the connecting ring of the present invention;

[0020] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixing cylinder of the present invention;

[0021] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the protective cover of the present invention;

[0022] Figure 6 It is a schematic diagram of the main three-dimensional structure of the guide plate and the contact rod of the present invention;

[0023] Figure 7 It is a schematic diagram of a cross-sectional three-dimensional structure of a sliding frame of the present invention;

[0024] Figure 8 It is a rear perspective structural schematic diagram of the sliding frame of the present invention;

[0025] Fig. 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixing rod of the present invention;

[0026] Fig.10 It is a schematic diagram of a cross-sectional three-dimensional structure of a fixing frame of the present invention;

[0027] Fig.11 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixing column of the present invention.

[0028] In the figure, 101, fixed frame; 102, first telescopic rod; 103, connecting ring; 104, fixed tube; 106, sliding ring; 107, limit seat; 108, protective cover; 109, first limit block; 201, second limit block; 202, fixed block; 203, magnetic element; 301, limit rod; 401, sliding frame; 402, first elastic airbag; 501, fixed ring; 601, second elastic airbag; 60 2. Suction cup; 701. Second telescopic rod; 702. Sliding frame; 7021. Guide plate; 703. L-shaped groove; 704. Sliding member; 7041. Connecting member; 705. Fixed frame; 706. First elastic telescopic member; 7061. Contact rod; 707. Second elastic telescopic member; 708. Fixed rod; 801. Fixed column; 802. Rotating rod; 803. Threaded portion; 804. Universal joint; 805. L-shaped frame. DETAILED DESCRIPTION

[0029] Reference to an embodiment herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] In order to solve the problem that when the tunnel needle is removed from the patient's subcutaneous tissue, the blood seeping out of the removed part of the tunnel needle will affect the medical staff's judgment on the removal position of the tunnel needle, thereby threatening the safety of the medical staff, the present invention covers a large area of ​​the part where the tunnel needle is removed from the patient's muscle tissue, so that the removal position of the tunnel needle is kept within a controllable range, so that the safety of the medical staff will not be threatened when the tunnel needle is removed.

[0031] Embodiment 1

[0032] A tunnel needle auxiliary device for peritoneal dialysis surgery, please refer to Figure 1-Figure 5 , including a fixed frame 101, two first telescopic rods 102 distributed in a linear array are fixedly connected to the left side of the lower part of the fixed frame 101, and the telescopic ends of the two first telescopic rods 102 distributed in a linear array are fixedly connected to a connecting ring 103, and the connecting ring 103 is rotatably connected to a fixed cylinder 104 through a connecting rod. Before performing peritoneal dialysis on a patient, the medical staff buckles the fixed cylinder 104 at the removal position of the tunnel needle according to the removal position of the tunnel needle, and timely adjusts the swing angle of the fixed cylinder 104 to make the swing angle of the fixed cylinder 104 close to the removal angle of the tunnel needle. The removal position of the tunnel needle is limited by the fixed cylinder 104 covering the tunnel needle to prevent the tunnel needle from stabbing the medical staff when it is removed. The upper side of the fixed cylinder 104 is slidably connected to a sliding ring 106, and a Spring, this spring is used to drive the sliding ring 106 to reset and slide, the lower side of the sliding ring 106 is slidably connected to a limit seat 107 located in the fixed cylinder 104, and the lower side of the limit seat 107 is fixedly connected to a protective cover 108 located in the fixed cylinder 104. When the tunnel needle does not enter the fixed cylinder 104, the lower side of the protective cover 108 is in an expanded and stretched state. The material of the protective cover 108 is ultra-high molecular weight polyethylene fiber (commonly used in stab-proof clothing, with high strength and good elastic recovery). The lower side of the fixed cylinder 104 is limited and slidably connected to a first limit block 109 distributed in an annular array, and the first limit blocks 109 distributed in an annular array are fixedly connected to one side of the axis of the fixed cylinder 104 with an elastic rope fixed to the lower side of the protective cover 108. When the tunnel needle does not enter the fixed cylinder 104, the elastic rope adjacent to the first limit block 109 is in a stretched state.

[0033] Please refer to Figure 5The sliding ring 106 is slidingly connected to a second limit block 201 distributed in an annular array on one side close to its axis. The opposite sides of the second limit blocks 201 distributed in an annular array pass through the sliding ring 106 and are limited by the limit seat 107. The second limit block 201 is composed of a trapezoidal block and a rectangular block. When the second limit blocks 201 distributed in an annular array are close to each other, the limit seat 107 is limited so that the limit seat 107 and the protective cover 108 are located in the fixed cylinder 104. A spring is arranged between the second limit block 201 and the sliding ring 106. The spring is used to provide support for the second limit block 201. The upper side of the fixed cylinder 104 is fixedly connected to the fixed block 202 distributed in an annular array. The back side of the fixed block 202 distributed in an annular array Both are provided with inclined surfaces, the inclined surface of the fixed block 202 is squeezed and matched with the trapezoidal block of the adjacent second limit block 201, the number of the fixed blocks 202 distributed in the annular array is consistent with the number of the second limit blocks 201 distributed in the annular array, the lower side of the fixed block 202 is squeezed and matched with the adjacent second limit block 201, when the sliding ring 106 drives the second limit blocks 201 distributed in the annular array to move upward, the fixed block 202 squeezes the second limit block 201, so that the second limit block 201 slides to the side away from the limit seat 107, thereby releasing the limit on the limit seat 107, the sliding ring 106 is fixedly connected with the magnetic suction piece 203 distributed in the annular array, the magnetic suction piece 203 is a magnet, and the magnetic suction piece 203 is magnetically matched with the adjacent second limit block 201.

[0034] Please refer to Figure 5 The lower side of the sliding ring 106 is fixedly connected with a ring-shaped array of limit rods 301. The number of the ring-shaped array of limit rods 301 is consistent with the number of the ring-shaped array of first limit blocks 109. The side of the ring-shaped array of limit rods 301 close to the outer peripheral side of the fixed tube 104 is respectively limited and cooperated with the adjacent first limit blocks 109. The ring-shaped array of limit rods 301 are all located on the outside of the fixed tube 104.

[0035] Please refer to Figure 4 and Figure 5The lower side of the fixed cylinder 104 is limitedly slidably connected with a sliding frame 401 distributed in an annular array. The number of the sliding frames 401 distributed in an annular array is consistent with the number of the limiting rods 301 distributed in an annular array. A spring is arranged between the sliding frame 401 and the fixed cylinder 104. When the tunnel needle does not enter the fixed cylinder 104, the adjacent springs of the sliding frame 401 are in a compressed state. The sliding frames 401 distributed in an annular array are all located below the first limiting block 109 distributed in an annular array. The sliding frames 401 distributed in an annular array are respectively connected with the adjacent limiting rods 301. 1 limit cooperation, the limit rod 301 is used to limit the adjacent sliding frame 401, the first elastic airbag 402 is fixedly connected to one side of the annular array distributed sliding frame 401 located in the fixed cylinder 104, and the first elastic airbag 402 is used to prevent the sliding frame 401 from hard contact with the tunnel needle. A fixing ring 501 located at the lower side of the annular array distributed sliding frame 401 is fixedly connected in the fixed cylinder 104, and the fixing ring 501 is provided with a truncated cone groove. The diameter of the lower side of the truncated cone groove in the fixing ring 501 is greater than the diameter of the upper side, which is used to guide the tunnel needle.

[0036] Please refer to Figure 1 and Figure 2 The fixing frame 101 and the connecting ring 103 are both fixedly connected with the second elastic airbags 601 and the suction cups 602 which are distributed in a mirror image. The upper side of the suction cup 602 is connected with the adjacent second elastic airbag 601. When the suction cup 602 is in contact with the patient's skin, the gas in the second elastic airbag 601 is discharged from the adjacent suction cup 602 through the deformation of the second elastic airbag 601, so that the suction cup 602 is adsorbed on the patient's skin surface.

[0037] Before performing peritoneal dialysis on the patient, the medical staff buckles the fixing tube 104 at the removal position of the tunnel needle according to the removal position of the tunnel needle, and then presses all the second elastic airbags 601. Taking the movement process of one of the second elastic airbags 601 as an example, after the second elastic airbag 601 is pressed, the gas inside it is ejected from the adjacent suction cup 602. Then the medical staff presses the suction cup 602 and releases the adjacent second elastic airbag 601. The second elastic airbag 601 rebounds under the action of its own elastic force, so that the adjacent suction cup 602 is adsorbed on the patient's skin.

[0038] After all the suction cups 602 are attached to the patient's skin, the medical staff swings the fixed cylinder 104 so that the tilt angle of the fixed cylinder 104 is close to the angle at which the tunnel needle moves out. The medical staff then moves the tunnel needle out of the patient's muscle tissue, and the tunnel needle then enters the fixed cylinder 104. The fixed cylinder 104 covers the tunnel needle and limits the removal position of the tunnel needle to prevent the medical staff from being stabbed when the tunnel needle moves out.

[0039] The tunnel needle entering the fixed cylinder 104 then contacts the fixed ring 501. Under the action of the truncated cone groove of the fixed ring 501, the tunnel needle is guided so that the tunnel needle slides along the axis of the fixed ring 501 and the fixed cylinder 104, avoiding hard contact between the tunnel needle and the inner wall of the fixed cylinder 104, which may cause the tunnel needle head to break, thereby affecting the integrity of the tunnel needle removal.

[0040] After the tunnel needle enters the fixed cylinder 104, the tunnel needle head contacts the inner side of the protective cover 108. As the tunnel needle continues to go deeper into the tunnel, the limit seat 107 is squeezed to drive the sliding ring 106 to slide upward. During the upward movement of the sliding ring 106, the adjacent spring is squeezed. The sliding ring 106 drives all the second limit blocks 201 and the limit rod 301 to slide upward. During the upward movement of all the second limit blocks 201, they are respectively in contact with and squeezed by the adjacent fixed blocks 202, so that all the second limit blocks 201 slide back to each other, thereby releasing the limit on the limit seat 107 (the adjacent springs are squeezed during the sliding of the second limit blocks 201, when the magnetic suction piece 203 is on the adjacent second limit blocks After the adsorption force of 201 is greater than the supporting force provided by the adjacent second limit block 201, the magnetic suction piece 203 adsorbs the second limit block 201 to fix it), all the limit rods 301 slide upward to release the limitation of all the first limit blocks 109 and all the sliding frames 401, and all the first limit blocks 109 slide toward each other along the fixed tube 104 under the action of the adjacent elastic ropes, so that the lower side of the protective cover 108 shrinks, and the tunnel needle head is wrapped by the shrinkage of the lower side of the protective cover 108 to prevent the sharp part of the tunnel needle from injuring the medical staff during the subsequent separation of the tunnel needle (when the tunnel needle completes the task, the medical staff will separate the tunnel needle from the catheter according to the standards for medical waste disposal).

[0041] After the tunnel needle head is wrapped by the limit seat 107, all the limit rods 301 have released the limit on all the sliding frames 401. Under the action of the compressed springs of all the sliding frames 401, all the sliding frames 401 move toward each other. When all the sliding frames 401 drive all the first elastic air bags 402 to move toward each other, the first elastic air bags 402 contact the outer side of the tunnel needle to fix the tunnel needle. The first elastic air bags 402 are deformed when contacting the outer side of the tunnel needle, thereby buffering the impact force of the sliding frame 401 on the tunnel needle.

[0042] After completing the fixation of the tunnel needle, the medical staff presses all the second elastic airbags 601 to separate all the suction cups 602 from the patient's skin, and then the medical staff pulls the fixing tube 104 upward. During the upward movement of the fixing tube 104, the tunnel needle is driven to move, so that the tunnel needle is completely separated from the patient's muscle tissue. Through the above operations, the sharp part of the tunnel needle is first wrapped, and then the tunnel needle is fixed in the fixing tube 104. Finally, the fixing tube 104 and the tunnel needle are pulled out. In this way, the tunnel needle is "removed" from the patient's muscle tissue (the existing method relies on thrust to move the tunnel needle out of the patient's muscle tissue. The problem in this case is that when the medical staff pushes the tunnel needle, the blood secreted or exuded by the patient is easy to adhere to the medical staff's hands, causing the medical staff's hands to loosen, which will prolong the time it takes to remove the tunnel needle).

[0043] When the tunnel needle is removed, the medical staff disconnects the tunnel needle from the catheter, and then pulls the tunnel needle downward, which drives the protective cover 108 and its accessories to slide downward, so that the limit seat 107 is separated from the sliding ring 106. Then the medical staff pulls all the sliding frames 401 until the limit rod 301 is inserted into the adjacent sliding frame 401 (the adjacent spring is squeezed and separated from the tunnel needle during the movement of the sliding frame 401). Under the action of the spring, the sliding ring 106 drives all the limit rods 301 to move to the lower side thereof and insert into the adjacent sliding frame 401 to limit the sliding frame 401. Then the medical staff removes the tunnel needle from the fixed position. The medical staff then inserts the magnetic rod into the fixed cylinder 104 and proceeds to the next process; when the sliding ring 106 and its accessories need to be reused, the medical staff inserts the magnetic rod into the fixed cylinder 104 so that the end of the magnetic rod fits with the lower side of the sliding ring 106 (the magnetic rod is larger than the adsorption force of all magnetic suction parts 203 on all second limit blocks 201). Under the action of the magnetic rod adsorbing all the magnetic suction parts 203, all the magnetic suction parts 203 slide toward each other. Then the medical staff takes out the magnetic rod and reinserts the new protective cover 108 and the limit seat 107 into the lower side of the sliding ring 106 (the magnetic rod method is only for illustration, and is not limited to the method of resetting and sliding all the magnetic suction parts 203).

[0044] When wrinkles appear on the skin of the patient's surgical site, it will affect the operation of the tunnel needle by medical staff. Medical staff need to continuously stretch the wrinkled skin of the patient during the insertion of the tunnel needle to make the surgical site of the patient flat, so as to facilitate the entry of the tunnel needle and the judgment of medical staff. The present invention stretches and fixes the wrinkled part of the patient's skin by graded stretching to make the skin of the patient's surgical site flat.

[0045] The parts involved in the second embodiment of the present invention are all made of transparent materials.

[0046] Embodiment 2

[0047] Based on Example 1, please refer to Figure 2 and Figure 6-Figure 11 , further comprising second telescopic rods 701 distributed in a linear array, the second telescopic rods 701 distributed in a linear array are all fixedly connected to the left side of the upper part of the fixing frame 101, the telescopic ends of the second telescopic rods 701 distributed in a linear array are commonly fixedly connected to a sliding frame 702, the sliding frame 702 is fixedly connected to two guide plates 7021 distributed in a front and rear mirror image, the back sides of the left parts of the two guide plates 7021 are both provided with inclined surfaces, the sliding frame 702 is provided with two L-shaped grooves 703 distributed in a front and rear mirror image, the L-shaped groove 703 is composed of a vertical groove and a horizontal groove (the position of the L-shaped groove 703 close to the adjacent guide plate 7021 is the horizontal groove). The position of the L-shaped groove 703 away from the adjacent guide plate 7021 is a vertical groove), the sliding frame 702 is limitedly slidably connected with the sliding members 704 that are mirror images and distributed in a linear array, the sliding members 704 distributed in the linear array are all slidably matched with the adjacent L-shaped grooves 703, the initial position of the sliding member 704 distributed in the linear array is located in the vertical groove of the adjacent L-shaped groove 703 (the initial position is the position when the patient is not subjected to peritoneal dialysis surgery), the adjacent two sliding members 704 are hinged with a connecting member 7041 through a hinge rod, and the lower side of the sliding member 704 distributed in the linear array is fixed with different lengths of The length of the fixed frame 705 is gradually increased from the side close to the adjacent second telescopic rod 701 to the side away from the adjacent second telescopic rod 701. The right side of the linear array fixed frame 705 is provided with a first elastic telescopic member 706. The upper side of the telescopic portion of the first elastic telescopic member 706 is fixedly connected to a contact rod 7061. The contact rod 7061 is extruded and matched with the adjacent guide plate 7021. The telescopic end of the first elastic telescopic member 706 is fixedly connected to the second elastic telescopic member 707. The telescopic end of the second elastic telescopic member 707 is fixedly connected to a fixed rod 708. The cooperation between the movable member 704 and the adjacent L-shaped groove 703 changes the sliding direction of the fixed rod 708, so that when the sliding member 704 slides in the horizontal groove of the adjacent L-shaped groove 703, the two fixed rods 708 close to the fixing frame 101 "remain" on the patient's skin. Before the patient undergoes peritoneal dialysis, the two fixed rods 708 close to the fixing frame 101 will first slide to the bending part in the middle of the adjacent L-shaped groove 703. The bending part in the middle of the L-shaped groove 703 is the bulging part of the patient's abdomen. At this time, the two fixed rods 708 close to the bending part in the middle of the L-shaped groove 703 are in contact with the bulging part of the patient's abdomen.

[0048] Please refer to Figure 7-Figure 11The fixed frame 705 is connected to a fixed column 801 in a limited sliding manner on one side close to the adjacent guide plate 7021. The fixed frame 101 contacts and cooperates with the adjacent fixed column 801. The lower part of the sliding frame 702 is provided with a rotating rod 802 that is mirrored in front and back and distributed in a linear array. Half of the rotating rods 802 distributed in the linear array are limitedly rotated with the adjacent fixed frame 705. The rotating rod 802 that is rotated with the fixed frame 705 is provided with a threaded portion 803. The threaded portion 803 is threadedly matched with the adjacent fixed column 801. The threaded portion 803 is mirrored and distributed in a linear array. The pitch of the thread increases in a step-like manner from the facing side to the far side. The two adjacent fixed columns 801 are moved away from each other by the rotation of the threaded portion 803. The remaining rotating rods 802 in the linear array are transmission-connected to the adjacent rotating rods 802 through the universal joint 804. The middle part of the universal joint 804 and the connecting part of the two adjacent connecting members 7041 are located on the same vertical line, which is used to keep the rotating rods 802 distributed in the linear array at a uniform rotation angle and speed. An L-shaped frame 805 is fixedly connected to the lower side of the fixed column 801, and the right side of the L-shaped frame 805 is fixedly connected to the adjacent first elastic telescopic member 706.

[0049] Before performing peritoneal dialysis on a patient with skin folds, the medical staff fixes all the suction cups 602 at the patient's surgical position, and then moves the two fixing rods 708 close to the fixing frame 101 to the bend in the middle of the adjacent L-shaped groove 703. During the movement of the two fixing rods 708, the adjacent sliding members 704 are respectively driven to slide along the adjacent L-shaped groove 703, so that the sliding members 704 are located at the bend in the middle of the adjacent L-shaped groove 703. During the sliding of the sliding members 704, the adjacent sliding members 704 and their accessory parts are driven to slide through the adjacent hinged rods and connecting members 7041. Finally, the two guide plates 7021 are pushed to the left, and the two guide plates 7021 drive the sliding frame 702 to move to the left. During the movement of the sliding frame 702, the telescopic parts of all the second telescopic rods 701 are stretched. Under the contact and cooperation between the fixing frame 101 and the two adjacent fixed columns 801, the two adjacent fixed columns 801 will not slide along with the sliding frame 702.

[0050] When the sliding frame 702 moves to the left, all the sliding members 704 slide along the adjacent L-shaped grooves 703. With the action of the fixing frame 101 blocking the two adjacent fixed columns 801, the two adjacent fixed columns 801 remain "in place", and the remaining fixed columns 801 slide from the vertical groove on the left side of the L-shaped groove 703 to the horizontal groove on the right side thereof under the action of sliding along the adjacent L-shaped grooves 703, so that all the fixed columns 801 gradually change from vertical movement to horizontal movement, and contact the patient's skin surface, so that the evenly distributed fixed columns 801 are "left" on the patient's skin surface at intervals.

[0051] Taking the sliding process of one of the sliding members 704 as an example, with the continuous movement of the sliding frame 702, the sliding member 704 drives its accessory parts to slide along the transverse groove of the adjacent L-shaped groove 703, so that the contact rod 7061 adjacent to the sliding member 704 is squeezed by the adjacent guide plate 7021, and the left side of the guide plate 7021 squeezes the adjacent contact rod 7061 to the side away from the sliding frame 702, so that the contact rod 7061 drives the telescopic part of the adjacent first elastic telescopic member 706 and the adjacent second elastic telescopic member 707 and the fixed rod 708 to slide to the side away from the sliding frame 702, and the patient's wrinkled skin is pulled by the contact between the lower side of the fixed rod 708 and the patient's wrinkled skin, so that the patient's wrinkled skin is stretched, thereby facilitating medical staff to operate the tunnel needle.

[0052] When the contact rod 7061 contacts the left side of the adjacent guide plate 7021 and does not contact the side away from the second telescopic rod 701, the wrinkled part of the patient's skin has been stretched. At this time, the patient's skin can no longer be stretched by the fixed rod 708. When the contact rod 7061 continues to slide along the left side of the adjacent guide plate 7021, the fixed rod 708 squeezes the telescopic part of the adjacent second elastic telescopic member 707, so that the fixed rod 708 remains in a fixed area while preventing excessive stretching of the patient's skin.

[0053] When all the sliding members 704 distributed in the linear array are transferred to the transverse groove of the adjacent L-shaped groove 703, the active stretching of the patient's wrinkled skin has been completed. Then the medical staff rotates the rotating rod 802 away from the side of the fixed frame 101. Taking the rotation process of the rotating rod 802 distributed in the linear array on one side as an example, the rotating rod 802 distributed in the linear array on one side drives the remaining rotating rods 802 on the same side to rotate during the rotation process under the action of the universal joint 804 transmission connection. In the process of the rotating rod 802 driving the adjacent threaded portion 803 to rotate on the adjacent fixed frame 705, the adjacent fixed column 801 and the L-shaped frame 805 drive the adjacent first elastic telescopic member 706, the adjacent second elastic telescopic member 707 and the adjacent fixed rod 708 to slide. In the process of the fixed rod 708 sliding, the patient's wrinkled skin is stretched laterally, thereby improving the flatness of the patient's wrinkled skin.

[0054] By lateral stretching of the patient's wrinkled skin by the four fixing rods 708 on one side, medical staff can easily insert the tunnel needle into the patient's subcutaneous tissue. Under the effect of the step-by-step increase in the pitch of the threaded portion 803 distributed in a linear array on one side, the distance between two adjacent fixing rods 708 on one side increases during the sliding process, and the distance between any two fixing rods 708 remains consistent, thereby further improving the flatness of the patient's wrinkled skin.

[0055] After the patient's wrinkled skin is fixed, the medical staff can perform peritoneal dialysis on the patient. During the peritoneal dialysis, the needle removal operation can be repeated by the operation in the first embodiment.

[0056] After the needle removal operation is completed, the lower sides of all fixing rods 708 are separated from the patient's skin.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tunnel needle auxiliary device for peritoneal dialysis surgery, characterized by: The invention comprises a fixing frame, one side of which is fixedly connected with a first telescopic rod distributed in a linear array, and the telescopic ends of the first telescopic rods distributed in a linear array are commonly fixedly connected with a connecting ring, and the connecting ring is rotatably connected with a fixing cylinder through the connecting rod, and the upper side of the fixing cylinder is slidably connected with a sliding ring, and a spring is arranged between the sliding ring and the fixing cylinder, and the sliding ring is slidably connected with a limiting seat at the lower side in the fixing cylinder, and a protective cover located in the fixing cylinder is fixedly connected to the lower side of the limiting seat, and the material of the protective cover is ultra-high molecular weight polyethylene fiber, and when the tunnel needle does not enter the fixing cylinder, the lower side of the protective cover is in an expanded and stretched state, and the fixing cylinder is slidably connected with a first limiting block distributed in an annular array, and the opposite sides of the first limiting blocks distributed in an annular array are fixedly connected with elastic ropes fixedly connected to the lower side of the protective cover, and after the tunnel needle enters the fixing cylinder, the tunnel needle head contacts the inner side of the protective cover, and the tunnel needle head is wrapped by the contraction of the lower side of the protective cover to prevent the sharp part of the tunnel needle from stabbing medical staff during the subsequent separation of the tunnel needle; The sliding ring is slidably connected to a side close to the axis thereof with a second limit block distributed in an annular array, and the opposite sides of the second limit blocks distributed in an annular array are both limitedly matched with the limit seat, a spring is arranged between the second limit block and the sliding ring, a fixed block distributed in an annular array is fixedly connected to the upper side of the interior of the fixed cylinder, the lower side of the fixed block passes through the sliding ring and is pressed and matched with the adjacent second limit block, and the sliding ring is fixedly connected to a magnetic member distributed in an annular array, and the magnetic member is magnetically matched with the adjacent second limit block; The lower side of the sliding ring is fixedly connected with limiting rods distributed in an annular array, the lower side of the limiting rods is limitedly matched with the adjacent first limiting blocks, and the limiting rods distributed in an annular array are all located outside the fixed cylinder; The fixed cylinder is slidably connected to a sliding frame distributed in a circular array, a spring is arranged between the sliding frame and the fixed cylinder, the sliding frames distributed in the circular array are all located below the first limit block distributed in the circular array, the sliding frames are limitedly cooperated with the adjacent limit rods, and the first elastic airbag is fixedly connected to one side of the sliding frames distributed in the circular array located in the fixed cylinder.

2. A tunnel needle auxiliary device for peritoneal dialysis surgery according to claim 1, characterized in that: A fixing ring located at the lower side of the sliding frame distributed in an annular array is fixedly connected in the fixing cylinder, and the fixing ring is provided with a truncated cone groove, and the diameter of the lower side of the truncated cone groove in the fixing ring is greater than the diameter of the upper side.

3. A tunnel needle auxiliary device for peritoneal dialysis surgery according to claim 1, characterized in that: The fixing frame and the connecting ring are both fixedly connected with second elastic airbags and suction cups distributed in mirror images, and the upper sides of the suction cups are communicated with the adjacent second elastic airbags.

4. A tunnel needle auxiliary device for peritoneal dialysis surgery according to claim 3, characterized in that: The cam is provided with an L-shaped groove, and the sliding frame is slidably connected to a sliding member that is mirrored and distributed in a linear array. The sliding members distributed in the linear array are all slidably matched with adjacent L-shaped grooves, and a connecting member is hinged between two adjacent sliding members through a hinge rod. The lower sides of the sliding members distributed in the linear array are all fixedly connected to a fixed frame, and the lengths of the fixed frames distributed in the linear array are inconsistent. A first elastic elastic member is provided on one side of the fixed frame close to the adjacent guide plate, and a contact rod that is squeezed and matched with the adjacent guide plate is fixedly connected to the upper side of the telescopic portion of the first elastic elastic member, and the telescopic end of the first elastic elastic member is fixedly connected to the second elastic elastic member, and the telescopic end of the second elastic elastic member is fixedly connected to the fixed rod.

5. A tunnel needle auxiliary device for peritoneal dialysis surgery according to claim 4, characterized in that: The fixed frame is slidably connected with a fixed column, and the fixed frame is in contact with and cooperates with the adjacent fixed column. A mirror-imaged rotating rod distributed in a linear array is provided below the sliding frame. Half of the rotating rods distributed in the linear array are rotationally cooperated with the adjacent fixed frame. The rotating rods rotationally cooperated with the fixed frame are provided with a threaded portion, and the threaded portion is threadedly cooperated with the adjacent fixed column. The remaining rotating rods in the linear array are transmission-connected with the adjacent rotating rods through a universal joint. An L-shaped frame is fixedly connected to the lower side of the fixed column, and the side of the L-shaped frame away from the adjacent fixed column is fixedly connected to the adjacent first elastic telescopic member.

6. A tunnel needle auxiliary device for peritoneal dialysis surgery according to claim 5, characterized in that: The middle part of the universal joint and the connecting parts of two adjacent connecting members are located on the same vertical line.

7. A tunnel needle auxiliary device for peritoneal dialysis surgery according to claim 5, characterized in that: The pitches of the threaded parts which are mirror-imaged and distributed in a linear array increase in a step-like manner from the opposite sides to the opposite sides.

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