Defibrillation electrode plate

Abstract

The utility model provides a defibrillation electrode plate. The defibrillation electrode plate comprises an electric conductor and a handle assembly, the conductor is at least partially rod-shaped, the head end of the conductor is used for contacting the heart, and the tail end is used for connecting a defibrillator; the handle assembly comprises a clamping piece matched with the electric conductor and an insulating piece formed through injection molding, the clamping piece is annular, the electric conductor penetrates through and is clamped to the clamping piece, and the whole body of the clamping piece and the part, from the clamping piece to the tail end, of the electric conductor are wrapped with the insulating piece. The defibrillation electrode plate provided by the utility model has the following advantages: on one hand, the annular clamping piece can uniformly disperse internal stress generated by injection molding, so that the conductor is protected, and the yield of the defibrillation electrode plate after injection molding is improved; and on the other hand, in the injection molding process, due to the existence of the clamping piece, an injection mold is less in contact with the electric conductor, the damage of the mold to a surface coating of the electric conductor during injection molding of the insulating piece is effectively prevented, and the defibrillation electrode plate is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a defibrillation electrode plate. Background Art

[0002] A defibrillator is a medical device that uses a strong pulse current to pass through the heart to eliminate arrhythmias and restore sinus rhythm. It is an essential emergency equipment for all departments of a hospital. Defibrillation is one of the most important steps in cardiopulmonary resuscitation. When a patient needs emergency defibrillation, open-chest surgery is required. The defibrillator connects to the defibrillator electrode pad and continuously charges and discharges the patient to defibrillate the patient. The defibrillator electrode pad is one of the important accessories for in-body defibrillation of the defibrillator and is a Class III medical device. It requires multiple high-temperature disinfection operations when in use.

[0003] The defibrillator electrode pad includes a conductor for conducting electricity and a handle wrapped around the end of the conductor. The handle of the defibrillator electrode pad in the related art is mostly formed by injection molding of plastic materials. During the manufacturing process, the mold of the injection molding handle is easy to scratch the coating on the surface of the conductor. After multiple high-temperature boiling and disinfection, the conductor and handle of the defibrillator electrode pad are at risk of damage or cracking. Utility Model Content

[0004] The technical purpose of the utility model is to provide a defibrillation electrode plate, aiming at least to solve the problem that the handle of the defibrillation electrode plate scratches the surface of the electrode plate during use and manufacturing.

[0005] To solve the above technical problems, the utility model is implemented as follows: a defibrillation electrode plate, comprising: a conductor and a handle assembly;

[0006] The conductor is at least partially rod-shaped, the head end of the conductor is used to contact the heart, and the tail end is used to connect to a defibrillator;

[0007] The handle assembly includes a clip-on component matching the conductor and an injection-molded insulating component. The clip-on component is ring-shaped, the conductor passes through and is clipped to the clip-on component, and the insulating component is coated around the clip-on component and the portion of the conductor from the clip-on component to the tail end.

[0008] Furthermore, the conductor includes a connecting portion and a handle portion which are sequentially connected from the head end to the tail end of the conductor, the connecting portion is in the shape of a round rod, and the connecting portion is interference fit and clamped in the clamping member.

[0009] Furthermore, one end of the clamping member is in contact with the handle portion, and the handle portion is in the shape of a round rod and has a radius greater than an inner diameter of the clamping member.

[0010] Furthermore, the peripheral edge of one end of the clamping part close to the head end of the conductor coaxially protrudes to form an abutment portion, and the outer diameter of the abutment portion is not less than the radius of the handle portion; the insulating part includes an inner mold, and the inner mold covers the non-abutment portion of the clamping part and the portion of the conductor from the clamping part to the tail end.

[0011] Furthermore, the insulating member further comprises an outer mold, and the outer mold covers the outer surface of the abutting portion and the inner mold.

[0012] Furthermore, the inner mold and the outer mold are multi-color molded or multi-time injection molded.

[0013] Furthermore, the hardness of the outer mold is smaller than that of the inner mold.

[0014] Furthermore, the periphery of the abutting portion is rounded.

[0015] Furthermore, the clamping member includes two clamping components separated along an axial section, and the two clamping components are clamped to each other.

[0016] Furthermore, at least one first clamping member is provided on a cut surface of one of the clamping components, and a second clamping member matching the first clamping member is provided on a cut surface of another of the clamping components;

[0017] The first clamping member and the second clamping member are clamping protrusions and / or clamping grooves.

[0018] Compared with the prior art, the defibrillator electrode plate in the utility model has the following beneficial effects: the conductor is passed through and clamped on the annular clamping piece, and the insulating part is injection-molded on the clamping piece and the conductor to form the handle of the defibrillator electrode plate. On the one hand, the annular clamping piece can evenly disperse the internal stress generated by the injection molding, thereby protecting the conductor and improving the yield rate of the defibrillator electrode plate after injection molding; on the other hand, during the injection molding process, due to the presence of the clamping piece, the injection mold contacts the conductor less, effectively protecting the insulating part from damage to the surface coating of the conductor by the mold during injection molding, thereby protecting the defibrillator electrode plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the defibrillation electrode plate in the embodiment of the utility model;

[0020] Figure 2 yes Figure 1 The cross-sectional view along the middle line AA and the enlarged view of some details;

[0021] Figure 3 It is a schematic diagram of the structure of the defibrillation electrode plate in the embodiment of the utility model when it is not covered with an outer mold;

[0022] Figure 4It is a schematic diagram of the structure of the defibrillation electrode plate in the embodiment of the utility model when it is not wrapped with an insulator;

[0023] Figure 5 It is a partial structural exploded view of the defibrillation electrode plate in the embodiment of the utility model;

[0024] Figure 6 It is a top view schematic diagram of the clamping member in some embodiments of the utility model.

[0025] In the accompanying drawings, each reference numeral represents: 10, defibrillation electrode pad; 100, conductor; 110, connecting portion; 120, handle portion; 120a, connector accommodating cavity; 200, handle assembly; 210, snap-on component; 210a\b, snap-on assembly; 211, abutting portion; 220, inner mold; 121 / 221, positioning structure; 230, outer mold; 231, anti-slip protrusion; 300, connector. DETAILED DESCRIPTION

[0026] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] Example:

[0030] See also Figures 1 to 5 In this embodiment, a defibrillation electrode pad 10 includes: a conductor 100 and a handle assembly 200;

[0031] The conductor 100 is at least partially rod-shaped, the head end of the conductor 100 is used to contact the heart, and the tail end is used to connect to the defibrillator;

[0032] The handle assembly 200 includes a clip 210 matching the conductor 100 and an injection-molded insulating part. The clip 210 is ring-shaped, and the conductor 100 passes through and is clipped to the clip 210. The surrounding of the clip 210 and the part of the conductor 100 from the clip 210 to the tail end are covered with the insulating part.

[0033] In this embodiment, the conductor 100 is passed through and clamped to the annular clamping piece 210, and the insulating piece is injection molded on the clamping piece 210 and the conductor 100 to form the handle of the defibrillation electrode plate 10. On the one hand, the annular clamping piece 210 matches the conductor 100, and the inner wall of the clamping piece 210 contacts the surface of the conductor 100, which can evenly disperse the internal stress generated during injection molding, thereby protecting the conductor 100 and improving the yield of the defibrillation electrode plate 10 after injection molding; on the other hand, during the injection molding process, due to the presence of the clamping piece 210, the injection mold contacts the conductor 100 less, which effectively protects the insulating piece from damage to the surface coating of the conductor 100 during injection molding, thereby protecting the defibrillation electrode plate 10.

[0034] Specifically, Figure 2 As shown, the defibrillation electrode plate 10 further includes a connector 300, and the tail end of the conductor 100 has a connector 300 accommodating cavity 120a, one end of the connector 300 is arranged in the connector 300 accommodating cavity 120a and is electrically connected to the conductor 100, and the other end protrudes from the tail end of the conductor 100. The connector 300 is used to electrically connect to the defibrillator, and specifically can be a wire covered with an insulating layer. When the insulating part is injection molded, the connector 300 accommodating cavity 120a can be filled, so that the connector 300 is fixed in the connector 300 accommodating cavity 120a.

[0035] The defibrillation electrode pads 10 are used in pairs. The conductors 100 of the two defibrillation electrode pads 10 are kept in contact with the heart. The tail ends of the conductors 100 of the two defibrillation electrode pads 10 have connectors 300 for connecting to a defibrillator. The defibrillator controls the discharge so that the current passes through the heart from one defibrillation electrode pad 10 to the other defibrillation electrode pad 10.

[0036] It should be known that the conductor 100 is mostly in the shape of a round rod, but can also be an elliptical rod or other shapes. The clamp 210 matches the conductor 100, and the inner wall of the clamp 210 can tightly contact the surface of the conductor 100. If the conductor 100 is an elliptical rod, the clamp 210 is also an elliptical ring.

[0037] In this embodiment, if Figure 2 As shown, the head end of the conductor 100 is spoon-shaped. In other embodiments, the head end of the conductor 100 may also be flat or in other shapes.

[0038] Furthermore, if Figure 2 As shown, the conductor 100 includes a connecting portion 110 and a handle portion 120 which are sequentially connected from the head end to the tail end of the conductor 100 . The connecting portion 110 is in the shape of a round rod and is inserted through an interference fit and clamped in the clamping member 210 .

[0039] Specifically, in this embodiment, the connecting portion 110 is in the shape of a round rod. Since the clamping member 210 matches the conductor 100, the clamping member 210 is also in the shape of a circular ring. The radius of the connecting portion 110 is slightly less than or equal to the inner diameter of the clamping member 210, so that the clamping member 210 and the connecting portion 110 are interference-fitted. The design of the round rod and the circular ring and the interference fit between the two are conducive to uniformly dispersing the stress of the insulating part of the handle assembly 200 during injection molding, thereby protecting the conductor 100 of the defibrillation electrode plate 10. [H1]

[0040] Preferably, at least the inner wall portion of the clip 210 has a certain elasticity [H2], so that the radius of the connecting portion 110 can be slightly larger than the inner wall of the clip 210. On the one hand, it ensures that there is a larger contact area between the inner wall of the clip 210 and the surface of the connecting portion 110. On the other hand, it increases the pressure of the inner wall of the clip 210 on the surface of the connecting portion 110, so that the clip 210 can be stably fixed to the connecting portion 110. Finally, the elastic inner wall of the clip 210 can also avoid damaging the conductor 100. The above three aspects are beneficial to the clip 210 to disperse the stress during injection molding.

[0041] Furthermore, if Figure 2 As shown, one end of the clamping member 210 abuts against the handle portion 120 . The handle portion 120 is in the shape of a round rod and has a radius greater than the inner diameter of the clamping member 210 .

[0042] The design that the radius of the handle portion 120 is larger than the inner diameter of the clip 210 limits the freedom of the clip 210 along the axial direction of the conductor 100. The handle portion 120 plays an auxiliary positioning role, so that one end of the clip 210 can abut against the handle portion 120.

[0043] Furthermore, if Figure 2 and Figure 5 As shown, the peripheral edge of one end of the clamping member 210 close to the head end of the conductor 100 coaxially protrudes to form an abutment portion 211, and the outer diameter of the abutment portion 211 is not less than the radius of the handle portion 120; the insulating member includes an inner mold 220, and the inner mold 220 covers the non-abutment portion 211 of the clamping member 210 and the portion of the conductor 100 from the clamping member 210 to the tail end.

[0044] The portion of the conductor 100 from the abutment portion 211 to the head end needs to contact the patient's heart during use and has extremely high disinfection and sterilization requirements. Therefore, a coating is usually provided on the surface of the conductor 100, especially to avoid damage to the coating on the portion of the conductor 100 from the abutment portion 211 to the head end.

[0045] During the injection molding process of the inner mold 220, since the inner mold 220 covers the portion of the clamping member 210 that is not the abutment portion 211, and the outer diameter of the abutment portion 211 is not less than the radius of the handle portion 120, such abutment portion 211 protects the portion of the conductor 100 from the abutment portion 211 to the head end, thereby preventing the coating of this portion from being damaged during the injection molding process, especially during the mold opening process. [H3]

[0046] Preferably, the periphery of the abutting portion 211 is flush with the outer surface of the inner mold 220 , thereby ensuring the smoothness of the periphery of the transition connection between the abutting portion 211 and the inner mold 220 .

[0047] Specifically, Figure 4 As shown, the handle portion 120 of the conductor 100 has a plurality of positioning structures 121 , and the positioning structures 121 are used for positioning the mold when the inner mold 220 is injected.

[0048] Furthermore, if Figure 1 and 2 As shown, the insulating member further includes an outer mold 230 , and the outer mold 230 covers the outer surface of the abutting portion 211 and the inner mold 220 .

[0049] In the related art, the one-piece molded insulating part must ensure that its material will not crack during repeated disinfection, and must also ensure that it has suitable hardness and good wrapping of the handle portion 120. It is often difficult to have both. Therefore, compared to the one-piece molded insulating part, the material selection of the inner mold 220 and the outer mold 230 in the utility model is more.

[0050] The inner mold 220 and the outer mold 230 form double protection for the handle portion 120. The outer mold 230 covers the outer surface of the abutment portion 211, fixing the abutment portion 211 between the inner mold 220 and the outer mold 230 to prevent the clip 210 from falling off, and also making the fit between the inner mold 220 and the outer mold 230 more stable, reducing the risk of cracking of the handle assembly 200 after multiple high-temperature steaming and sterilization.

[0051] Specifically, Figure 3As shown, the inner mold 220 and the outer mold 230 are injection molded, and the inner mold 220 has a grid-like protrusion that can be interlocked with the outer mold 230 to make the outer mold 230 and the inner mold 220 more stable. The inner mold 220 also has a plurality of positioning structures 221, which have a similar function to the positioning structures 121 on the conductor 100 and are used to position the mold when the outer mold 230 is injected.

[0052] It should be understood that at least one layer of outer mold 230 is provided on the inner mold 220. The outer mold 230 can be made of a variety of different materials or the same material, but at least the materials of the inner mold 220 and the outer mold 230 are different; the outer mold 230 can cover the entire area of ​​the inner mold 220, or cover a partial area of ​​the inner mold 220, but at least cover more than 70% of the area.

[0053] Furthermore, the inner mold 220 and the outer mold 230 are multi-color molded or multi-injection molded.

[0054] Furthermore, the hardness of the outer mold 230 is smaller than that of the inner mold 220 .

[0055] Specifically, the insulator is made of organic polymer material. Since the inner mold 220 and the outer mold 230 are formed by injection molding, in the injection molding process, the hardness of the outer mold 230 is smaller than that of the inner mold 220, which can better ensure the yield rate.

[0056] During use, the inner mold 220 having a higher hardness than the outer mold 230 ensures the strength of the handle assembly 200 , and the outer mold 230 having a lower hardness than the inner mold 220 can improve the grip feel.

[0057] Preferably, the inner mold 220 uses polypropylene (PP) material with a Rockwell hardness of 60 to 120, good chemical resistance, electrical insulation and high mechanical strength. The outer mold 230 uses polyurethane (TPU) material with a Shore hardness of 65A to 85D, certain elasticity, good wear resistance, chemical corrosion resistance, high temperature resistance and mold resistance, and can adapt to repeated high-temperature disinfection of the defibrillator electrode plate 10.

[0058] Furthermore, if Figure 1 As shown, the surface of the outer mold 230 is also provided with a plurality of anti-skid protrusions 231. The anti-skid protrusions 231 are used to increase the friction between the hand and the handle assembly 200, thereby improving the user's gripping experience.

[0059] Furthermore, if Figure 2 As shown, the periphery of the abutting portion 211 is rounded.

[0060] Specifically, the periphery of the abutting portion 211 is flush with the outer surface of the inner mold 220 , and the periphery of the abutting portion 211 is rounded, which can further even out the internal stress generated during the injection molding of the outer mold 230 and avoid damaging the conductor 100 of the defibrillation electrode plate 10 .

[0061] Furthermore, if Figure 5 As shown, the clamping member 210 includes two clamping components 210a / b separated along an axial section, and the two clamping components 210a / b are clamped to each other.

[0062] Specifically, Figure 6 As shown, the axial sections β and γ of the two snap-fit ​​components 210a / b may be on the same plane or not, that is, there is an angle α between the plane where the axial section γ and β are located, 0°≤α≤30°[H4]. This arrangement facilitates the installation of the snap-fit ​​component 210 on the conductor 100, and can generate pressure on the conductor 100 during snap-fitting, so that the snap-fit ​​component 210 can be stably fixed on the conductor 100.

[0063] In this embodiment, preferably, the axial sections β and γ of the two clamping components 210a / b are on the same plane.

[0064] Furthermore, if Figure 5 As shown, at least one first clamping member 210 (not marked in the figure) is disposed on the cut surface of one clamping assembly 210a / b, and a second clamping member 210 (not marked in the figure) matching the first clamping member 210 is disposed on the cut surface of the other clamping assembly 210a / b;

[0065] The first clamping member 210 and the second clamping member 210 are clamping protrusions (not marked in the figure) and / or clamping grooves (not marked in the figure).

[0066] Specifically, Figure 5 As shown, in this embodiment, on the axial section, two end sections of the clamping component 210a are respectively provided with two clamping protrusions and two clamping grooves, and the clamping component 210b is provided with two clamping protrusions and two clamping grooves corresponding to and matching the clamping component 210a.

[0067] It should be known that, on the axial section, both end sections of the snap-in component 210a may be provided with snap-in protrusions, or both end sections may be provided with snap-in grooves, or one part may be provided with snap-in protrusions and the other part may be provided with snap-in grooves, as long as the snap-in component 210b is matched with the snap-in component 210a.

[0068] The clamping member 210 arranged in this way is firmly clamped, has a low manufacturing cost, can be well applied to the defibrillation electrode plate 10, and plays a role in dispersing internal stress when the handle assembly 200 is injection-molded.

[0069] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A defibrillation electrode pad, characterized in that: include: Conductor and handle assembly; The conductor is at least partially rod-shaped, the head end of the conductor is used to contact the heart, and the tail end is used to connect to a defibrillator; The handle assembly includes a clip-on component matching the conductor and an injection-molded insulating component. The clip-on component is ring-shaped, and the conductor is passed through and clipped into the clip-on component. The insulating component is coated around the clip-on component and the portion of the conductor from the clip-on component to the tail end.

2. The defibrillation electrode pad according to claim 1, characterized in that: The conductor comprises a connecting portion and a handle portion which are sequentially connected from the head end to the tail end of the conductor, the connecting portion is in the shape of a round rod, and the connecting portion is interference fit and clamped in the clamping member.

3. The defibrillation electrode pad according to claim 2, characterized in that: One end of the clamping member is in contact with the handle portion, and the handle portion is in the shape of a round rod and has a radius greater than the inner diameter of the clamping member.

4. The defibrillation electrode pad according to claim 2, characterized in that: The peripheral edge of one end of the clamping part close to the head end of the conductor coaxially protrudes to form an abutment portion, and the outer diameter of the abutment portion is not less than the radius of the handle portion; the insulating part includes an inner mold, and the inner mold covers the non-abutment portion of the clamping part and the portion of the conductor from the clamping part to the tail end.

5. The defibrillation electrode pad according to claim 4, characterized in that: The insulating member further includes an outer mold, and the outer mold covers the outer surface of the abutting portion and the inner mold.

6. The defibrillation electrode pad according to claim 5, characterized in that: The inner mold and the outer mold are multi-color molded or multi-time injection molded.

7. The defibrillation electrode pad according to claim 5, characterized in that: The outer mold has a lower hardness than the inner mold.

8. The defibrillation electrode pad according to claim 5, characterized in that: The periphery of the abutting portion is rounded.

9. The defibrillation electrode pad according to claim 2, characterized in that: The clamping member comprises two clamping assemblies separated along an axial section, and the two clamping assemblies are clamped to each other.

10. The defibrillation electrode pad according to claim 9, characterized in that: At least one first clamping member is arranged on a cut surface of one of the clamping components, and a second clamping member matching the first clamping member is arranged on a cut surface of another of the clamping components; The first clamping member and the second clamping member are clamping protrusions and / or clamping grooves.

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