CN111244705A - A test is with connecting wire for artificial heart pacemaker implants - Google Patents

Abstract

The invention discloses a connecting wire for testing implantation of an artificial cardiac pacemaker, which comprises an electric wire and a crocodile clip; the crocodile clip comprises an upper clip arm, a lower clip arm and an elastic piece; the crocodile clip also comprises a clip groove formed between the upper clip arm and the lower clip arm; the upper clamping arm comprises an upper clamping body and an upper convex tooth; the lower clamping arm comprises a lower clamping body, a lower tooth socket matched with the upper convex tooth and a lower convex tooth arranged on the lower clamping body; the upper clamp body is provided with an upper tooth groove matched with the lower convex tooth; a gap is formed between the upper convex tooth and the lower tooth groove; a gap is formed between the lower convex tooth and the upper tooth groove; a gap is formed between the upper convex tooth and the lower convex tooth; according to the invention, through the arrangement of the clamping grooves and the gaps, secondary injury to a patient is avoided, and the wound of the patient can be better healed, so that the risk of postoperative infection is reduced, the patient can be better healed, and the success rate of the operation is improved.

Description

A test connecting wire for implantation of artificial cardiac pacemaker

technical field

The invention belongs to the technical field of medical aids, and in particular relates to a test connecting wire used for implantation of an artificial cardiac pacemaker.

Background technique

A pacemaker is an electronic therapy device implanted in the body. The pulse generator emits electrical pulses powered by batteries, and through the conduction of lead electrodes, it stimulates the myocardium in contact with the electrodes to excite and contract the heart, so as to achieve treatment. The purpose of cardiac dysfunction due to some arrhythmias; wherein, one end of the lead wire is the electrode end, which is used to connect the pacemaker, and the other end is the screw-in end, which is used to implant the patient's heart, the electrode end and the screw-in end Both are provided with cathode and anode; since the electrode terminal anode is annular structure, it is also called anode ring.

During the operation, after the screwed-in end of the electrode lead is sent into the patient's heart and adhered to the myocardium, the operator needs to rotate the electrode lead to screw the helical head cathode of the electrode lead into the myocardium; During the process, it is necessary to use an ECG monitor and a pacemaker programmer to monitor the intracavitary electrogram and electrode impedance changes that are screwed into the cathode terminal in pacing or non-pacing states at any time. Through the observation of these parameter changes, the operator can Rotate the electrode into depth more accurately so that surgery can be done better and safer.

However, in the prior art, the connection between the electrode end of the electrode lead and the monitoring equipment is fixed through the alligator clip of the connecting wire, and the other end of the connecting wire is connected to the detector, which leads to the operator turning the electrode lead, the electrode end is connected and fixed. Because it is fixed by the alligator clip and cannot rotate synchronously, the connecting wire is entangled and knotted, which seriously affects the operation of the operator. Reconnect the electrode end to the alligator clip, which makes it impossible to continuously and real-time monitor the changes of the ECG shape and electrode impedance, so that the operator cannot accurately grasp whether the screw-in end has reached the appropriate position, and avoid breaking the interval when screwing in. If the screwing depth is wrong, it will increase the operation time and bring pain to the patient and increase the risk of surgical infection. higher).

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, the present invention provides a test connecting wire for implantation of an artificial cardiac pacemaker with less trauma to the patient.

In order to achieve the above object, the present invention adopts the following technical solutions: a test connecting wire for artificial cardiac pacemaker implantation, including an electric wire and an alligator clip connected with the electric wire; the alligator clip includes an upper clip arm, A lower clip arm matched with the upper clip arm and an elastic piece whose one end acts on the upper clip arm, and the other end of the elastic piece acts on the lower clip arm; the alligator clip also includes a a clamping groove between the upper clamping arm and the lower clamping arm; the upper clamping arm comprises an upper clamping body and an upper protruding tooth arranged on the upper clamping body; the lower clamping arm comprises a lower clamping body, and a lower tooth slot matched with the upper protruding teeth and a lower protruding tooth arranged on the lower clip body; the upper clip body is provided with an upper tooth slot matched with the lower protruding tooth; the upper projection There is a gap between the teeth and the lower tooth slot; there is a gap between the lower protruding tooth and the upper tooth slot; there is a gap between the upper protruding tooth and the lower protruding tooth; The skin tissue at the edge of the patient's wound can be placed in the clip groove, so that the skin at the edge of the wound will not be clamped and damaged, thereby avoiding the secondary injury to the patient, and at the same time, it will not increase the difficulty of suturing the wound. The wound of the patient can be healed better, thereby reducing the risk of postoperative infection, so that the patient can recover better; then through the setting of the upper and lower convex teeth, the upper and lower alveoli and the gaps between them, the skin tissue of the patient can be It is accommodated in the gap, so that it can be clamped stably and at the same time, the damage to the skin tissue of the patient is less, so that the wound of the patient can be healed better, and the risk of postoperative infection is further reduced.

Further, it also includes a lead joint for matching with the electrode lead; when the electrode lead rotates, at least part of the lead joint can rotate with the rotation of the electrode lead; through the arrangement of the above-mentioned structure, the electric power of the electrode lead is made. The extremity can be connected to the lead joint, so that when the operator rotates the electrode lead during the operation, at least part of the lead joint can rotate synchronously with the rotation of the lead wire, so that the lead wire will not be twisted and knotted, The operator does not need to remove the electrode end from the alligator clip to untie the twisted and knotted part, nor does it need an assistant to rotate the electrode end connected to the alligator clip. 、Accurately conduct to the monitor and pacemaker program controller, so as to ensure that the operator can grasp the changes of ECG and electrode impedance in real time, so that the operator can accurately grasp whether the screw-in end reaches the site or whether it breaks through when screwing in. It ensures the accuracy of the screw-in site, reduces the pain of the patient, enables the operation to be completed more quickly, and has a higher success rate of the operation; at the same time, since the electrode end is no longer clamped and fixed by the alligator clip, it will not cause any damage to the electrode end. Therefore, when the electrode lead is connected to the pacemaker, the connection is more stable, thereby ensuring that the pacemaker can always play a stable role in assisting the patient's cardiac pacing.

Further, the wire connector includes a casing, an inner core that can be rotated back and forth relative to the casing, a slot provided on the inner core, and a socket communicated with the slot; through the arrangement of the above structure , so that the electrode lead can be connected to the rotor on the lead joint by rotating the connecting part, so that when the electrode lead rotates, the rotor can rotate with the rotation of the electrode lead, thereby realizing the purpose of preventing the electrode lead from winding and knotting.

Further, the alligator clip also includes a connecting portion for connecting the wire and the lower clip arm; through the arrangement of the above structure, a stable electrical connection can be formed between the alligator clip and the wire, so that the electrical signal Transmission is more stable.

Further, the connecting part includes a transition section connected with the lower clip body, a fixing piece for fixing at least part of the electric wire and at least part of the elastic member on the transition section, and a fixed piece connected to the transition section. The connecting ring connected to the transition section; through the arrangement of the above structure, the wire and the elastic member can be connected and fixed together to realize electrical connection, so that the electrical signal on the upper clip body can be better conducted to the wire, thereby ensuring the accuracy of the monitored data.

Further, the transition section gradually decreases from the side close to the lower clip body to the side close to the connecting ring; through the arrangement of the above structure, it plays the role of constricting the elastic member and the wire, so that the two The connection is more stable.

Further, the crocodile clip also includes a clip cover that is covered outside the upper clip arm and the lower clip arm; through the arrangement of the above structure, the surface roughness of the alligator clip is increased, so that the operator can operate more easily. It is convenient, not easy to slip, and improves the safety of the operation.

Further, the clip cover includes a cover body, an upper cover part provided on the cover body, a lower cover part provided on the cover body, and a strip-shaped opening matched with the clip groove; through the above structure The setting of the clamp cover will not affect the opening and closing of the upper and lower clamp arms, and the operation is more convenient and labor-saving.

Further, the electric wire includes a wire sleeve matched with the connecting ring; through the arrangement of the above structure, the electric wire is not easily bent and damaged, and the safety of the operation is further improved.

Further, the electric wire includes a first wire, a hub connector matched with the first wire, and a hub covered outside the first wire; the arrangement of the above structure makes the wire more tidy, It is not easy to tie knots, thus saving the time of finishing and improving the efficiency of the operation.

To sum up, the present invention avoids the secondary injury to the patient through the setting of the clamping groove and the gap, so that the wound of the patient can be healed better, thereby reducing the risk of postoperative infection, enabling the patient to recover better, Improve the success rate of surgery.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

FIG. 2 is a schematic diagram of the three-dimensional structure of the matching of the alligator clip and the wire in the present invention;

Fig. 3 is the enlarged schematic diagram of A place in Fig. 2;

Fig. 4 is a three-dimensional schematic diagram of the cooperation (removing the clip cover) of the alligator clip and the wire in the present invention;

Fig. 5 is a three-dimensional cross-sectional structural schematic diagram of the matching of alligator clips and wires in the present invention;

Fig. 6 is the enlarged schematic diagram at B in Fig. 5;

Fig. 7 is the schematic diagram of the matching explosion structure of the alligator clip and the wire in the present invention;

Fig. 8 is the three-dimensional structure schematic diagram of the upper clamping arm in the present invention;

9 is a schematic diagram of the three-dimensional structure of the matching of the lower clamp arm and the connecting portion in the present invention;

10 is a schematic diagram of the three-dimensional structure of the fitting of the wire connector and the wire in the present invention;

Figure 11 is a schematic three-dimensional cross-sectional view of the mating structure of the wire connector and the wire in the present invention;

Fig. 12 is the enlarged schematic diagram at C in Fig. 11;

Fig. 13 is the schematic diagram of the matching explosion structure of the wire joint and the wire in the present invention;

Fig. 14 is the enlarged schematic diagram at D in Fig. 13;

Fig. 15 is a three-dimensional cross-sectional structural schematic diagram of the housing in the present invention;

FIG. 16 is a schematic three-dimensional structure diagram of the connector in the present invention.

Detailed ways

As shown in Fig. 1-16, a test connecting wire for implantation of artificial cardiac pacemaker includes a lead connector 2, an alligator clip 3 and a wire 1, wherein the alligator clip 3 includes an upper clip arm 31, a lower clip arm 32. The elastic member 33 and the connecting portion 34; the upper clamping arm 31 and the lower clamping arm 32 are connected by a connecting shaft 36, thereby realizing the rotational cooperation between the upper clamping arm and the lower clamping arm; the elastic member 33 is a The root torsion spring is installed on the connecting shaft. One end of the torsion spring acts on the upper clamp arm, and the other end acts on the lower clamp arm, so that when there is no external force, the upper and lower clamp arms are under the action of the torsion spring. The contact part 34 is installed on the lower clamp arm 32 to facilitate the electrical connection between the alligator clip 3 and the wire 1 .

Specifically, the upper clamping arm 31 includes an upper clamping body 311, an upper connecting plate 312, upper teeth 313 and upper protruding teeth 314; ; The upper clip body 311 and the lower clip body 321 are both open in the shape of a rectangular parallelepiped and are made of medical stainless steel material. In other embodiments, other materials that meet medical standards can also be used; the edges on both sides of the upper clip body are At least part of the surface extends toward the lower clamping arm 32 to form an upper clamping edge 315; at least part of the surfaces at the edges on both sides of the lower clamping body extend toward the upper clamping body, forming a lower clamping edge 325; The opening of the sides makes the surface area of the upper and lower clamping bodies larger, and at the same time keeps the outer surface flat, which is not easy to be scratched during use, and is more convenient to apply force; The upper protruding teeth 314 are formed by extending downward, and upper tooth slots 316 are left on both sides of the upper protruding teeth. The ends of the upper protruding teeth are opened in an arc structure; and the lower clamping body 321 is close to at least part of one end of the upper clamping body. The surface extends upward to form two lower protruding teeth 324, and a lower tooth slot 326 is formed between the two lower protruding teeth, and the ends of the lower protruding teeth are opened in an arc structure; When the upper protruding teeth 314 are inserted into the lower tooth slots 326, and the lower protruding teeth 324 are embedded in the upper tooth slots 316, and the upper and lower protruding teeth are inserted into the upper and lower tooth slots, the upper protruding teeth There are gaps between the upper and lower protruding teeth, between the upper protruding teeth and the lower tooth slot, and between the lower protruding tooth and the upper tooth slot, so that the clamping and fixing are realized by the engagement of the upper and lower protruding teeth. There is a gap between the upper and lower tooth slots, and the volume of the upper and lower protruding teeth is much larger than that of the upper and lower teeth, so that the meshing of the upper and lower protruding teeth can play a better role in fixing and preventing falling off, and at the same time, it does less damage to the patient's body. It is beneficial to reduce the injured area and degree of the patient, thereby reducing the risk of postoperative infection for the patient, and making the patient easier to recover.

Further, the upper teeth 313 are continuous protruding teeth formed by at least part of the surface of the two sides of the upper clip body 311 close to one end of the upper protruding teeth 315 extending downward, and are distributed in an inclined state; the lower teeth 323 are formed by the lower clip body. The continuous protruding teeth formed by at least part of the surface of the two sides of the one end close to the lower protruding teeth 324 extending upwards of 321 are distributed in an inclined state, and the upper teeth and the lower teeth mesh with each other, which has the effect of strengthening the clamping, fixing and anti-dropping effect, and The protruding teeth of the upper and lower rodents are small in volume, so as to ensure a good clamping and fixing effect, and further reduce the degree of injury of the patient, so that the patient is not easy to be infected after surgery, and it is easier to recover; the lower clip body 321 is far away from the lower At least part of the surfaces on both sides of one end of the protruding teeth 324 extend upward to form a lower connecting plate 322, the lower connecting plate is opened in a semicircular structure; The upper connecting plate 312 is formed by extending downward. The upper connecting plate is also opened in a semi-circular structure, and the two lower connecting plates are flared and slightly inclined to the outside, while the two upper connecting plates are inclined to the inside, so that the upper connecting plate is inclined to the inside. The connecting plate can be placed on the inner side of the lower connecting plate, and the upper and lower connecting plates are provided with corresponding through holes. Rotating and cooperating to make the upper clip body turn more smoothly relative to the lower clip body, and the two will not interfere; the crocodile clip formed by the upper clip arm 31 and the lower clip arm 32 is also formed with a clip groove 37. The setting enables the edge of the patient's wound to be placed in the clip groove when the patient's body is clamped, thereby avoiding damage to the edge of the patient's wound, making the patient's wound suture more convenient, and the suture effect is better. Easier healing, which reduces the risk of infection for the patient, which in turn makes it easier for the patient to recover.

Further, the connecting portion 34 is installed on the lower clip arm 32 to facilitate the electrical connection between the lower clip arm and the wire 1, and in this embodiment, the connecting portion and the lower clip body 321 are integrally formed; in other embodiments, The connecting portion can also be connected and fixed with the lower clamping arm by welding or other connection methods; at least part of the surface of the end of the upper clamping body 311 away from the upper protruding teeth 314 extends outward to form a pressing portion 317, through the cooperation of the pressing portion and the connecting portion , it is convenient for the operator to exert force on the upper and lower clamping arms, so as to overcome the elastic force of the elastic member 33 and realize the clamping and fixing effect of the alligator clip; wherein the connecting portion 34 includes a transition section 341, a fixing piece 342 and a connecting ring 343. One end of the transition section 341 is connected to the The lower clip body 321 is connected, and the other end is connected to the connecting ring 343. The width of the transition section gradually decreases from the side close to the lower clip body to the side close to the connecting ring, and the cross section of the transition section is gradually changed from a rectangle with ribs. It becomes a semi-circle, which ensures a smoother transition from the lower clip body to the connecting ring, making it easier for the operator to apply force and the reaction force acting on the operator’s hand is gentler to avoid injury to the operator; the fixing piece 342 is made of At least part of the surfaces of the two sides of the transition section extend outward, and are divided into two pieces, one left and one right. When one end of the elastic member 33 and one end of the wire 1 are placed in the transition section and located between the two fixed pieces , by bending the two fixed pieces into the transition section, the two fixed pieces are stacked together, so that one end of the elastic piece and one end of the wire are pressed and fixed in the transition section, and fixed together by welding, and the wire is realized at the same time. The electrical connection with the alligator clip ensures that the electrical signal can be transmitted to the wire through the alligator clip, and then to the detector and the pacemaker program controller through the wire, so as to realize the purpose of real-time monitoring; into, leaving a gap between the two ends of the metal sheet.

Preferably, a clip cover 35 is provided on the outer cover of the alligator clip, thereby increasing the roughness of the surface of the alligator clip, making it more convenient for the operator to apply force, and at the same time, it is not easy to slip, so as to avoid the problem of increasing the risk of surgery due to accidental injury to the patient. The safety is higher, and it is not easy to cause the alligator clip to fall and be contaminated with bacteria due to slippage, which reduces the risk of postoperative infection and improves the success rate of the operation; the clip cover is made of silicone material, which has a certain elastic deformation At the same time, it can play an insulating role to avoid the problem that the current signal is disturbed due to the contact between the operator and the metal, so as to ensure the accuracy of the detected data, thereby ensuring the safety of the operation; the clip cover includes a cover body 350, an upper The cover part 351 and the lower cover part 352; the cover body cover is arranged on the outer side of the connection between the upper clamping arm 31 and the lower clamping arm 32, and the upper teeth 313 and the lower teeth 323 protrude from the opening on the cover body, so that the cover body is It will not affect the occlusion of the upper and lower teeth; preferably, a bar-shaped opening 353 is provided on the side of the cover body close to the upper and lower teeth, and the length of the bar-shaped opening is similar to the length of the clamping groove 37, so that the upper and lower clamping arms are The opening and closing is more convenient and labor-saving, and at the same time, it ensures that the clamping groove will not be blocked by the cover body, so that the clamping groove can play a better role; the upper cover part 351 is formed by extending outward from at least part of the surface of the cover body, and is opened in a hollow structure. It is arranged on the outer side of the pressing part 317, which is convenient for the operator to apply force. Preferably, the end of the pressing part 317 is opened in an arc structure, so as to avoid damage to the upper cover part and prolong the service life; The groove 318 enables the elastic upper cover part to be embedded in the groove during pressing, thereby realizing the relative fixation between the upper cover part and the pressing part, avoiding slippage, making the pressing more stable and safer to use; the lower cover part 352 is formed by at least part of the surface of the cover body close to the lower clip body extending outwards, opened in a tubular structure, and the cover is arranged on the outer side of the connecting part 34 to protect the electrical connection point between the wire and the alligator clip, and prolong the service life; The connection between the cover part 352 and the cover body 350 is provided with a first convex edge 354 and a second convex edge 355, and a third convex edge 356 is opened on the end of the lower cover part away from the cover body. At least part of the surface of the surface is formed to extend outward, so that when the operator opens and closes the alligator clip, it is more convenient to apply force, less slippery, and safer to use; the second protruding edge is directed from at least part of the surface on both sides of the cover body. The third convex edge is formed by extending outward from at least part of the surface of the lower cover part, and is opened in an annular structure. Applying force is more convenient.

Specifically, the wire 1 includes a first wire 11, a second wire 12, a third wire 13, a hub joint 14, a hub 15, a standard sleeve 16 and a wire sleeve 17; the diameter of the first wire 11 is 1mm-2mm, preferably is 1.5mm±0.05mm; the first wire includes a conductive core 111 and an insulating layer 112, the conductive core is made of copper or other conductive materials, and the material used in this embodiment is 60/0.08TC (tinned copper wire), The insulating layer 112 is wrapped on the outside of the conductive core, opened in a tubular structure, and made of PVC material; the size and structure of the second wire 12 and the third wire 13 are the same as those of the first wire 11; The second wire and the third wire are covered with a wire sleeve 17, and the wire sleeve is made of silicone material or other materials that meet medical standards; when the conductive core is connected with the alligator clip, the wire sleeve slides along the insulating layer and penetrates into the connection. inside the ring 343, and the wire sleeve is at least partially exposed outside the connection ring, so as to fill the gap between the outer wall of the wire and the inner wall of the connection ring, so that the connection wire will not be used due to the twist of the alligator clip. The ring is repeatedly contacted, rubbed and damaged or even broken, which ensures the stability of data transmission and makes the operation safer; at the same time, the wire sleeve fills the gap between the outer wall of the wire and the inner wall of the connecting ring, and the wire sleeve is made of silicone. The insulating layer is made of PVC material, and the friction between the two is large, so when the wire is pulled away from the alligator clip by external force, the wire sleeve plays the role of sharing the external force on the wire, so that the The connection between the wire and the alligator clip is not easy to be damaged, ensuring that the two are always in a stable electrical connection state, thereby improving the stability of data transmission, making the detected data more accurate, and making the operation safe and successful. higher rate.

Further, the hub connector 14 is installed on the outside of the first wire, the second wire and the third wire, and plays the role of bundling the three wires into one, so that the three wires and the alligator clips connected to the three wires and the The wire connector is not easy to be entangled and knotted, which is more convenient to use, avoids the time-wasting problem of arranging the wires, races against time for the operation, and further improves the success rate of the operation; the hub connector is made of 25P black PVC material, which is in line with environmental protection RHOS; The tube 15 is made of wear-resistant medical PVC material, and is sleeved on the outside of the bundled first wire, the second wire and the third wire, preferably directly injection-molded on the outside of the wire, which also prevents the wire, crocodile The function of knotting the clip and the wire connector; the standard sleeve is set on the outside of the hub, so that it is convenient to make some logos or other prompt text on it.

Further, one end of the first lead 11 is electrically connected to the alligator clip 3, and the other end is electrically connected to the lead connector 2; both ends of the second lead 12 and the third lead 13 are electrically connected to the alligator clip 3; the first lead 11 is electrically connected to the alligator clip 3; The lead connector 2 is used to connect with the electrode lead of the pacemaker, the alligator clip on the other end of the first lead is used to connect with the monitor; and the alligator clip 3 on one end of the second lead 12 is used to clamp the patient The skin of the wire is used as the anode, and the alligator clip on the other end is connected to the pacing programmer; during the monitoring process, according to different situations, you can choose to clip the alligator clip on one end of the third lead to the anode ring of the electrode end, and the other end The alligator clip on the top is connected to the detector and pacing programmer to obtain more implantation parameters.

In order to facilitate the distinction, the insulation layer of the three wires, the clip cover on the alligator clip and the outer skin on the wire connector are produced in different colors, wherein the first wire and the wire connector and alligator clip on it are all black; the second wire It is white, and the alligator clip on it is yellow; the third wire and the alligator clip on it are red; in other embodiments, one of the alligator clips of the second wire or the third wire can also be replaced with the wire connector 2 , so as to play a backup role.

Specifically, the wire connector 2 includes an outer skin 21, a casing 22, a rotating head 23, a connecting head 24 and a middle sleeve 25; the casing 22 is made of metal material, has electrical conductivity, and is opened in a hollow cylindrical structure, one end of which is opened There is a socket 221, a accommodating cavity 222 is formed in the middle, and an interface 223 is formed at the other end; the rotor 23 is made of conductive metal material, copper material is used in this embodiment, the rotor is opened in a cylindrical structure, and the rotor is installed In the accommodating cavity 222, the rotor can be rotated in the accommodating cavity, and the outer surface of the rotor is always in contact with the cavity wall of the accommodating cavity, so as to realize the electrical connection and cooperation between the rotor and the housing; the rotor is close to the socket 221 One end is provided with a rotating connection part 231, in this embodiment, the rotating connection part is a slot; preferably, the inner diameter of the rotating connection part 231 is the same as the inner diameter of the socket 221, so that the electrical connection between the electrode lead and the pacemaker is The pole can be connected to the rotating connection part 231 through the socket 221, and at the same time, the edge of the socket can play an auxiliary role in fixing the electrode end, preventing the electrode end from being deflected, and the installation is more stable.

Further, an elastic piece 26 is installed in the rotating connection portion 231 . The elastic piece is made of metal material and has a certain elasticity. In this embodiment, brass is used. In other embodiments, other materials with electrical conductivity can also be used. It is made of elastic metal material; the elastic piece includes a first fixing part 261 and a second fixing part 262, the first fixing part is opened in a ring structure, and its outer diameter is slightly larger than the inner diameter of the rotating connection part 231, so that the elastic piece is installed into the rotating connection The first fixing part can form an interference fit with the rotating connecting part, and the installation is more stable. After the electrode end of the electrode wire is inserted, when the electrode wire rotates, it can drive the shrapnel and the rotor to rotate together, but the shrapnel is difficult to It rotates relative to the rotor, so that the electrical signal transmission is more stable; the second fixing part is formed by at least part of the side surface of the first fixing part extending outward, and the arc-shaped sheet structure is opened, and the second fixing part is formed. The diameter gradually decreases from the end close to the first fixed part to the end away from the first fixed part, and the plurality of second fixed parts are arranged in a claw-like structure; It is placed in the rotating connection part, so that when the electrode end of the electrode wire is inserted into the rotating connection part, the second fixing part can be closely attached to the surface of the electrode end, so that the electrode end can be under the elastic force of the second fixing part. It is clamped and fixed in the rotating connection part, the connection is more stable, and it is not easy to fall off. At the same time, it can ensure that the electrode end and the rotor can always maintain an electrical connection state, thereby making the transmission of electrical signals more stable and accurate, providing the operator with Reliable data support; and the electrode end is not easy to rotate relative to the shrapnel, which prevents the electrode end from being worn, thereby ensuring a stable connection between the electrode end and the pacemaker, so that the pacemaker and the lead wire can always play a stable role in assisting the patient The function of cardiac pacing; when the rotor is accidentally stuck and cannot be rotated relative to the casing, the electrode end can rotate relative to the spring due to the elasticity of the shrapnel, thereby avoiding damage to the rotor or the electrode lead; in the shrapnel 26 After being installed in the rotating connecting part 231, the rotating connecting part is closed, so that the closing edge 233 is formed at the mouth edge of the socket, so that the elastic piece is fixed in the rotating connecting part, and the elastic piece is prevented from coming out as the electrode end is pulled out. .

Preferably, the elastic sheet 26 is further provided with a third fixing portion, and the third fixing portion is a convex portion formed by at least part of the inner surface of the elastic sheet extending outwards, so as to make the contact between the elastic sheet and the electrode end more closely, and The fixing and anti-dropping effect of the electrode end is better.

Further, the connecting head 24 includes a connecting column 241, a connecting groove 242 and a connecting convex portion 243. The connecting column 241 is made of a metal material with good electrical conductivity, and its outer surface is provided with an external thread, and the interface 223 is provided with a corresponding inner thread. threaded, so that the connecting head can be installed in the interface to realize the threaded connection between the connecting head and the shell; the connecting groove 242 is opened on one end of the connecting column and is opened in a straight-line structure, which can facilitate the screwing of the connecting column into the interface. , which also facilitates the electrical connection between the connector and the wire 1; the connecting protrusion 243 is opened at the other end of the connecting column, and is formed by at least part of the surface of the end of the connecting column extending outwards; the end of the swivel head 23 close to the interface 223 is A turning slot 232 is provided. When the turning head is installed in the housing and the connecting head is screwed with the housing, the connecting convex portion 243 is just embedded in the turning slot 232, and the two fit each other. The connecting convex portion can rotate in the turning slot, and The outer surface of the connecting convex portion is always abutted with the groove wall of the turning groove, so as to realize the rotational electrical connection and cooperation between the connecting head and the turning head.

Preferably, the turning groove is opened in a flared structure, so that the connecting convex part can always and part of the outer surface can be in contact with the groove wall of the turning groove, the turning head is fixed in the accommodating cavity 222, and the connecting convex part and the turning groove are connected. There is a gap between them to prevent the rotor from moving in the axial direction of the casing, so that the connection between the rotor and the electrode end of the electrode wire is more stable, and the fixing force of the connector to the rotor can be easily adjusted, so that the The rotor can be installed stably without affecting the rotation of the rotor; and the contact area between the connecting convex part and the rotor is always constant, which makes the data transmission more stable, thus making the electrical and electrode impedance in the operation. The changes of the data can be accurately transmitted to the detector and the program controller in real time, so that the surgeon can understand the various data parameters in the operation more clearly and accurately, so that the surgeon can better control the operation status, thereby reducing the operation risk. , improve the success rate of surgery.

Further, the middle sleeve 25 is sleeved on the outer side of the first wire 11, on the side where the first wire is connected with the wire connector 2, instead of the wire sleeve 17, the middle sleeve 25 is made of plastic material, and has a certain elasticity at the same time, Compared with rubber, the hardness is higher; after the first wire is electrically connected to the connector 24 and fixed, the middle sleeve is pushed into the flared section 224 formed on the casing 22 along the first wire, so that the first wire is The connection with the connector is not easy to move with the movement of the wire connector, thereby ensuring the stability of the connection between the first wire and the connector, and making the transmission of electrical signals more stable.

Further, the outer skin 21 is made of medical silicone material or other insulating materials, and the outer skin includes a first segment body 211 , a second segment body 212 and a third segment body 213 , and the first segment body 211 is wrapped on the outer side of the housing 22 , The second section body 212 covers the outside of the middle sleeve 25, and the third section body is used to connect the first section body and the second section body, so that the middle sleeve is stably installed in the flared section, and the middle sleeve is not It will rotate relative to the housing, so that the connecting head can be fixed at a preset position, and the problem of loosening will not occur with the rotation of the rotating head, which further ensures the stability of the connection between the rotating head and the connecting head.

Claims (10)

1. A test connecting wire for implanting an artificial cardiac pacemaker comprises an electric wire (1) and an alligator clip (3) connected with the electric wire (1); the crocodile clip (3) comprises an upper clip arm (31), a lower clip arm (32) matched with the upper clip arm (31) and an elastic piece (33) with one end acting on the upper clip arm (31), and the other end of the elastic piece (33) acts on the lower clip arm (32); the method is characterized in that: the crocodile clip (3) further comprises a clip groove (37) formed between the upper clip arm (31) and the lower clip arm (32); the upper clamping arm (31) comprises an upper clamping body (311) and an upper convex tooth (314) arranged on the upper clamping body (311); the lower clamping arm (32) comprises a lower clamping body (321), a lower tooth socket (326) matched with the upper convex tooth (314) and a lower convex tooth (324) arranged on the lower clamping body (321); an upper tooth groove (316) matched with the lower convex tooth (324) is arranged on the upper clamp body (311); a gap is formed between the upper convex tooth (314) and the lower tooth groove (326); a gap is formed between the lower convex tooth (324) and the upper tooth slot (316); the upper teeth (314) and the lower teeth (324) have a gap therebetween.

2. The test connection cord for an artificial cardiac pacemaker implant according to claim 1, wherein: the electrode lead wire connector also comprises a lead wire connector (2) matched with the electrode lead wire; when the electrode lead is rotated, at least a part of the lead tab (2) may be rotated along with the rotation of the electrode lead.

3. The test connection cord for an artificial cardiac pacemaker implant according to claim 2, wherein: the wire joint (2) comprises a shell (22), an inner core (23) capable of rotating back and forth relative to the shell (22), a slot (231) arranged on the inner core (23) and a socket (221) communicated with the slot (231).

4. The test connection cord for an artificial cardiac pacemaker implant according to claim 3, wherein: the crocodile clip (3) further comprises a connecting part (34) for connecting the electric wire (1) and the lower clip arm (32).

5. The test connection cord for an artificial cardiac pacemaker implant according to claim 4, wherein: the connecting part (34) comprises a transition section (341) connected with the lower clamp body (321), a fixing piece (342) used for fixedly connecting at least part of the electric wire (1) and at least part of the elastic piece (33) on the transition section (341), and a connecting ring (343) connected with the transition section (341).

6. The test connection cord for an artificial cardiac pacemaker implant according to claim 5, wherein: the transition section (341) is gradually reduced from the side close to the lower clamp body (321) to the side close to the connecting ring (343).

7. The test connection cord for an artificial cardiac pacemaker implant according to claim 6, wherein: the crocodile clip (3) further comprises a clip cover (35) which covers the upper clip arm (31) and the lower clip arm (32).

8. The test connection cord for an artificial cardiac pacemaker implant according to claim 7, wherein: the clamping cover (35) comprises a cover body (350), an upper cover body (351) arranged on the cover body (350), a lower cover body (352) arranged on the cover body (350) and a strip-shaped opening (353) matched with the clamping groove (37).

9. The test connection cord for an artificial cardiac pacemaker implant according to claim 8, wherein: the electric wire (1) comprises a wire sleeve (17) matched with the connecting ring (343).

10. The test connection cord for an artificial cardiac pacemaker implant according to claim 9, wherein: the electric wire (1) comprises a first lead (11), a wire collecting joint (14) matched with the first lead (11) and a wire collecting pipe (15) coated outside the first lead (11).

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