CN213588291U - Novel electrocardiogram chest lead convenient to use - Google Patents

Novel electrocardiogram chest lead convenient to use Download PDF

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Publication number
CN213588291U
CN213588291U CN202021187335.6U CN202021187335U CN213588291U CN 213588291 U CN213588291 U CN 213588291U CN 202021187335 U CN202021187335 U CN 202021187335U CN 213588291 U CN213588291 U CN 213588291U
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CN
China
Prior art keywords
chest lead
liquid
hollow cylinder
chest
elastic
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Expired - Fee Related
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CN202021187335.6U
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Chinese (zh)
Inventor
马彦卓
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980th Hospital of the Joint Logistics Support Force of PLA
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980th Hospital of the Joint Logistics Support Force of PLA
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Priority to CN202021187335.6U priority Critical patent/CN213588291U/en
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Abstract

The utility model discloses a novel electrocardiogram chest lead which is convenient to use, comprising a chest lead line and chest lead electrodes arranged at the first end of the chest lead line, wherein the second end of the chest lead line is connected with an instrument connector, the chest lead line is provided with six chest lead branch lines at the first end close to the chest lead line, and the free ends of the six chest lead branch lines are respectively connected with one chest lead electrode; the chest lead wire is provided with a chest lead bus near the second end of the chest lead wire, and the chest lead bus is used for branching and connecting the six chest leads to the instrument connector. The utility model provides a novel heart electrograph chest leads who facilitates use is through dividing into chest lead separated time and chest lead two sections structures of bus with chest lead line to can avoid between the chest lead line from the winding, in use avoids the trouble of reason line.

Description

Novel electrocardiogram chest lead convenient to use
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to novel heart electrograph chest leads who facilitates use.
Background
The electrocardiograph can automatically record the bioelectric signals (electrocardiosignals) generated by exciting the cardiac muscle during the heart activity, is an important device for detecting the heart function, and is a medical electronic instrument commonly used for clinical diagnosis and scientific research at present.
When the electrocardiogram examination is clinically carried out on a patient, the chest leads are wound due to the overlong traction distance, so that knotting is easy to cause, the time and labor are spent for sorting; in addition, the conventional chest lead electrode comprises an elastic suction ball and a bowl-shaped electrode, and the bowl-shaped electrode is adsorbed on the skin of a human body by depending on the suction force of the elastic suction ball when in use. However, even for the ordinary people with elastic skin, the chest lead electrode is sometimes dropped off, and for the people without subcutaneous fat, especially for dehydrated patients, the chest lead electrode is difficult to be adsorbed on the skin and is easy to drop off, thereby increasing the working difficulty for medical staff.
Therefore, there is a need for an electrocardiogram chest lead which can avoid entanglement and is convenient to use in clinic.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems of easy winding and inconvenient use existing in the clinical electrocardiogram chest lead in use, the utility model provides a novel electrocardiogram chest lead which is convenient to use.
The utility model relates to a novel electrocardiogram chest lead which is convenient to use, which comprises a chest lead line and chest lead electrodes arranged at the first end of the chest lead line, wherein the second end of the chest lead line is connected with an instrument connector, the chest lead line is provided with six chest lead branch lines at the first end close to the chest lead line, and the free ends of the six chest lead branch lines are respectively connected with one chest lead electrode; the chest lead wire is a chest lead bus near chest lead wire second end department, the chest lead bus is used for being connected to six chest lead separated time to the instrument connector.
The utility model provides a novel heart electrograph chest leads who facilitates use is through dividing into chest lead separated time and chest lead two sections structures of bus with chest lead line to can avoid between the chest lead line from the winding, in use avoids the trouble of reason line.
Furthermore, the length of the chest lead branching line is 10cm-15 cm. In the arrangement, the length of the chest lead branching line is limited, so that the length is convenient for the use of the electrocardiogram chest lead, and the winding of the chest lead line is well avoided.
Further, still include the stock solution portion, stock solution portion is internal to have disinfection alcohol or humidification liquid, the stock solution portion is provided with the liquid outlet, the liquid outlet leads the position of chest lead electrode and human contact with disinfection alcohol or humidification liquid. In the arrangement, the liquid storage part is arranged, so that the chest lead electrode can be conveniently disinfected or humidified.
Furthermore, the chest lead electrode is a suction ball type chest electrode, the suction ball type chest electrode comprises a metal sucker, an elastic suction ball and an electrode plate, the metal sucker is communicated with the elastic suction ball, and the electrode plate is fixedly connected with the metal sucker; a first hollow cylinder is arranged on the metal sucker, and a second hollow cylinder is arranged on the elastic sucker; wherein the second hollow cylinder is sleeved on the outer wall of the first hollow cylinder in a sealing manner.
Further, stock solution portion includes stock solution chamber, drain passageway and the play liquid piece that communicates each other, disinfection alcohol or humidification liquid set up in the stock solution chamber, wherein, the stock solution chamber set up in elasticity suction ball surface, the liquid outlet set up in go out on the liquid piece, it is attached in to go out one side that the liquid piece was provided with the liquid outlet the surface of metal sucking disc. In this kind of setting, carried out specific design to the stock solution portion, wherein the liquid outlet is attached and the metal sucking disc surface makes humidification and disinfection process more corresponding to can play better disinfection and humidification effect.
Furthermore, an elastic partition plate with a seam is arranged between the liquid storage cavity and the liquid guide channel, and the elastic partition plate is provided with a seam; when the liquid storage cavity is not acted by external force, the slit is closed, and the disinfecting alcohol or the humidifying liquid is left in the liquid storage cavity; when the liquid storage cavity is pressed by external force, the slit is opened, and the disinfection alcohol or the humidification liquid flows into the liquid guide channel from the liquid storage cavity. In the arrangement, the slit is more convenient to switch between an open state and a closed state, and the structure is simple and the production is convenient.
Furthermore, an elastic spherical surface is arranged on the outer surface of the elastic suction ball, and the liquid storage cavity is formed by the elastic spherical surface, the outer surface of the elastic suction ball and the space between the elastic partition plate; and a third hollow cylinder is sleeved on the outer side surface of the second hollow cylinder, the first end of the third hollow cylinder and the first end of the second hollow cylinder are connected onto an elastic partition plate, and the space among the third hollow cylinder, the second hollow cylinder and the elastic partition plate forms the liquid guide channel. In the arrangement, the elastic spherical surface has simple structure and convenient operation.
Furthermore, a liquid inlet is formed in the elastic spherical surface, and an openable sealing plug is arranged on the liquid inlet. In the arrangement, the liquid inlet is convenient for adding alcohol disinfectant or humidifying liquid into the liquid storage cavity.
The fixing belt is provided with six fixing holes penetrating through the fixing belt, and the positions of the fixing holes on the fixing belt correspond to the adsorption positions of the chest lead electrodes on a human body; the third hollow cylinder is of a hard structure, and a clamping plate is arranged on the outer surface of the third hollow cylinder; when the chest lead electrode is used, the fixing band is fixed on a human body, the fixing hole is sleeved on one side, away from the metal sucker, of the clamping plate, and the chest lead electrode is fixed on the human body. In the arrangement, the arrangement of the fixing band can increase the fixing effect on the basis of the fixation of the sucking disc, so that the electrocardiogram chest lead can be better adsorbed on the skin of a patient with poor skin elasticity (a dehydrated patient or the old, etc.).
Further, the clamping plate is a circular plate coaxial with the third hollow cylinder, and the section of the fixing hole is circular; the maximum cross-sectional diameter of the clamping plate is larger than the cross-sectional diameter of the fixing hole, and the cross-sectional diameter of the fixing hole is larger than the cross-sectional diameter of the outer side surface of the third hollow cylinder. In the arrangement, the structure of the clamping plate, the sizes of the clamping plate, the third hollow cylinder and the fixing hole are further limited, so that the electrocardiogram chest lead can be better used for different people.
The novel electrocardiogram chest lead convenient to use in the utility model can avoid the winding between the chest lead wires and avoid the trouble of wire arrangement in use by dividing the chest lead wires into a chest lead branching wire and a chest lead bus two-section structure; the liquid storage part is arranged, so that the chest lead electrode can be conveniently sterilized or humidified; the liquid outlet is attached to the outer surface of the metal sucker, so that the humidifying and disinfecting process is more targeted, and better disinfecting and humidifying effects can be achieved; the fixing effect can be increased on the basis of fixing the sucker by arranging the fixing band, so that the electrocardiogram chest lead can be better adsorbed on the skin of a patient (a dehydrated patient or the old, etc.) with poor skin elasticity.
Drawings
Fig. 1 is a schematic front view of a novel electrocardiogram chest lead convenient to use in an embodiment of the present invention;
fig. 2 is a schematic front view of chest lead lines in a novel electrocardiogram chest lead convenient to use in an embodiment of the present invention;
fig. 3 is a schematic diagram of the overall structure of the chest lead electrodes in the novel electrocardiogram chest lead which is convenient to use in the embodiment of the present invention;
fig. 4 is a schematic front view of chest lead electrodes in a novel electrocardiogram chest lead convenient to use in an embodiment of the present invention;
fig. 5 is a schematic view of the overall structure of a metal sucker and an electrode plate in a novel electrocardiogram chest lead which is convenient to use in the embodiment of the present invention;
fig. 6 is a schematic view of the overall structure of the elastic suction ball and the liquid storage portion in the electrode ball in the novel electrocardiogram chest lead convenient to use in the embodiment of the present invention;
fig. 7 is a schematic sectional structure view of an elastic suction ball and a liquid storage portion in a novel electrocardiogram chest lead convenient to use in an embodiment of the present invention;
fig. 8 is a schematic view of an overall structure of a chest lead electrode in a novel electrocardiogram chest lead used conveniently in cooperation with a fixing band in an embodiment of the present invention;
fig. 9 is a schematic view of the overall structure of another angle of the chest lead electrode and the fixing band in the novel electrocardiogram chest lead convenient for use in the embodiment of the present invention
Fig. 10 is a schematic view of the overall structure of the fixing band in the novel electrocardiogram chest lead for convenient use according to the embodiment of the present invention.
In the figure, 1, an instrument connector; 100. chest lead wire; 101. a first end of a chest lead wire; 102. a second end of the chest lead wire; 110. chest lead branching; 120. a chest lead bus; 200. chest lead electrodes; 210. a metal sucker; 211. a first hollow cylinder; 220. an elastic suction ball; 221. a second hollow cylinder; 222. an elastic spherical surface; 223. a third hollow cylinder; 224. clamping a plate; 230. an electrode sheet; 300. a liquid storage part; 310. a liquid storage cavity; 320. a drainage channel; 321. slotting; 322. an elastic partition plate; 330. discharging a liquid; 331. a liquid outlet; 340. a liquid inlet; 350. a sealing plug; 400. fixing belts; 410. and (7) fixing holes.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and some structures are not shown in the drawings, which can be derived by those skilled in the art according to the present invention.
Embodiment a novel electrocardiogram chest lead convenient to use
Fig. 1 is a schematic front view of a novel electrocardiogram chest lead which is convenient to use in the embodiment, as shown in fig. 1, a novel electrocardiogram chest lead which is convenient to use comprises a chest lead wire 100 and a chest lead electrode 200 arranged at a first end 101 of the chest lead wire, wherein a second end 102 of the chest lead wire is connected to an instrument connector 1; fig. 2 is a schematic front view of a chest lead wire 100 in a novel electrocardiogram chest lead that is convenient to use in the present embodiment, as shown in fig. 1-2, the chest lead wire 100 in the present embodiment has six chest lead branch wires 110 near a first end 101 of the chest lead wire, and a chest lead electrode 200 is connected to free ends of the six chest lead branch wires 110 respectively; chest lead wire 100 is a chest lead bus 120 near chest lead wire second end 102, chest lead bus 120 for connecting six chest lead sub-wires 110 to instrument connector 1. In use, the chest lead is connected to an electrocardiograph through the instrument connector 1, and the specific structure of the instrument connector 1 is the prior art and is not described herein.
The novel electrocardiogram chest lead convenient to use in the embodiment has the advantages that the chest lead wire 100 is divided into the chest lead wire distributing part 110 and the chest lead bus 120, so that the chest lead wire 100 can be prevented from being wound, and the trouble of wire arrangement is avoided in use.
Preferably, the length of the chest lead sub-line 110 in this embodiment is 10cm-15 cm. The chest lead branch line 110 with such a length is convenient for using the electrocardiogram chest lead, and can well avoid the winding of the chest lead line 100.
Fig. 3 is a schematic diagram showing the overall structure of a chest lead electrode 200 in a novel electrocardiogram chest lead convenient to use in the embodiment, and fig. 4 is a schematic diagram showing a front view of the chest lead electrode 200 in the novel electrocardiogram chest lead convenient to use in the embodiment; as shown in fig. 3-4, the chest lead electrode 200 in this embodiment is a suction ball type chest electrode, which includes a metal suction cup 210, an elastic suction ball 220 and an electrode plate 230, the metal suction cup 210 is communicated with the elastic suction ball 220, and the electrode plate 230 is fixedly connected to the metal suction cup 210; fig. 5 is a schematic view of the overall structure of the metal suction cup 210 and the electrode plate 230 in the novel electrocardiogram chest lead convenient to use in the present embodiment, and fig. 6 is a schematic view of the overall structure of the elastic suction ball 220 and the liquid storage portion 300 in the electrode ball in the novel electrocardiogram chest lead convenient to use in the present embodiment; as shown in fig. 5-6, the metal sucker 210 in this embodiment is provided with a first hollow cylinder 211, and the elastic sucker 220 is provided with a second hollow cylinder 221; wherein the second hollow cylinder 221 is hermetically sleeved on the outer wall of the first hollow cylinder 211.
The novel electrocardiogram chest lead convenient to use in the embodiment further comprises a liquid storage part 300, disinfection alcohol or humidification liquid is stored in the liquid storage part 300, the liquid storage part 300 is provided with a liquid outlet 331, and the disinfection alcohol or humidification liquid is guided to the position where the chest lead electrode 200 contacts with a human body through the liquid outlet 331. The liquid storage part 300 is arranged, so that the chest lead electrode 200 can be conveniently disinfected or humidified, and the disinfection function can quickly disinfect the chest lead to avoid cross infection; the humidifying function can facilitate the strength and stability of the connection of the chest lead electrode 200 with the human body.
Fig. 7 is a schematic sectional structure view of the elastic suction ball 220 and the liquid storage portion 300 in the novel electrocardiogram chest lead convenient to use in this embodiment, as shown in fig. 6-7, the liquid storage portion 300 in this embodiment includes a liquid storage cavity 310, a liquid guiding channel 320 and a liquid outlet member 330 that are mutually communicated, and the disinfecting alcohol or the humidifying liquid is disposed in the liquid storage cavity 310, wherein the liquid storage cavity 310 is disposed on the outer surface of the elastic suction ball 220, the liquid outlet 331 is disposed on the liquid outlet member 330, and one side of the liquid outlet member 330 having the liquid outlet 331 is attached to the outer surface of the metal sucker 210. The embodiment specifically designs the liquid storage part 300, wherein the liquid outlet 331 is attached to the outer surface of the metal sucker 210, so that the humidification and the disinfection processes are more targeted, and a better disinfection and humidification effect can be achieved.
Preferably, in this embodiment, an elastic partition 322 with a slit 321 is disposed between the liquid storage cavity 310 and the liquid guide channel 320, and the elastic partition 322 is provided with the slit 321; when the liquid storage cavity 310 is not acted by external force, the slit 321 is closed, and the disinfecting alcohol or the humidifying liquid is left in the liquid storage cavity 310; when the liquid storage cavity 310 is pressed by external force, the slit 321 is opened, and the disinfecting alcohol or the humidifying liquid flows into the liquid guide channel 320 from the liquid storage cavity 310. The slit 321 is convenient to switch between an open state and a closed state, and is simple in structure and convenient to produce.
As shown in fig. 7, an elastic spherical surface 222 is disposed on the outer surface of the elastic suction ball 220, and a liquid storage chamber 310 is formed by the elastic spherical surface 222, the outer surface of the elastic suction ball 220 and the space between the elastic partition 322; a third hollow cylinder 223 is sleeved on the outer side surface of the second hollow cylinder 221, the first end of the third hollow cylinder 223 and the first end of the second hollow cylinder 221 are connected to the elastic partition plate 322, and a liquid guide channel 320 is formed in the space among the third hollow cylinder 223, the second hollow cylinder 221 and the elastic partition plate 322. The elastic spherical surface 222 is simple in structure, the elastic spherical surface 222 has elasticity as the elastic suction ball 220, the shapes of the elastic spherical surface 222 and the elastic suction ball 220 can be changed directly through extrusion, so that the function of adsorbing the electrode on the skin of a human body and opening the slit 321 to discharge the liquid in the liquid storage cavity 310 is realized, and the operation is simple and convenient.
Preferably, the first end of the third hollow cylinder 223 is connected to the first end of the second hollow cylinder 221, wherein the joint between the first end of the third hollow cylinder 223 and the first end of the second hollow cylinder 221 is communicated with the liquid outlet member 330, and the liquid in the liquid storage cavity 310 enters the liquid guiding channel 320 after passing through the slit 321, and finally enters the liquid outlet member 330 and flows onto the outer surface of the metal suction cup 210 through the liquid outlet 331.
Preferably, the present embodiment further includes an inlet port 340 on the elastic spherical surface 222, and an openable sealing plug 350 is disposed on the inlet port 340. The liquid inlet 340 is provided to facilitate the addition of alcohol disinfectant or wetting liquid to the liquid storage chamber 310. It is further preferred that the sealing plug 350 is fixed to the outer wall of the inlet port 340 by a connecting band.
In some preferred embodiments, the novel electrocardiogram chest lead further includes a fixing band 400, fig. 8 is a schematic diagram of an overall structure of the chest lead electrode 200 in the novel convenient-to-use electrocardiogram chest lead of the present embodiment used with the fixing band 400, and fig. 9 is a schematic diagram of an overall structure of another angle of the chest lead electrode 200 in the novel convenient-to-use electrocardiogram chest lead of the present embodiment used with the fixing band 400; fig. 10 is a schematic diagram showing the overall structure of the fixing band 400 in the novel electrocardiogram chest lead which is convenient to use in the embodiment; as shown in fig. 8-10, in the present embodiment, six fixing holes 410 penetrating through the fixing band 400 are provided on the fixing band 400, and the positions of the fixing holes 410 on the fixing band 400 correspond to the suction positions of the chest lead electrode 200 on the human body; the third hollow cylinder 223 is a hard structure, and a clamping plate 224 is arranged on the outer surface of the third hollow cylinder 223; in use, the fixing strap 400 is fixed on the human body, and the fixing hole 410 is sleeved on the side of the clamping plate 224 away from the metal suction cup 210, so as to fix the chest lead electrode 200 on the human body. In this arrangement, the fixing band 400 can increase the fixing effect on the basis of the fixing by the suction cup, so that the electrocardiogram chest lead can be better adsorbed on the skin of a patient with poor skin elasticity (a dehydrated patient or the elderly, etc.).
The clamping plate 224 in this embodiment is a circular ring plate coaxial with the third hollow cylinder 223, wherein the cross section of the fixing hole 410 is circular; wherein, the maximum cross-sectional diameter of the clamping plate 224 is larger than the cross-sectional diameter of the fixing hole 410, and the cross-sectional diameter of the fixing hole 410 is larger than the cross-sectional diameter of the outer side surface of the third hollow cylinder 223. The structure of the clamping plate 224, the size of the clamping plate 224, the third hollow cylinder 223 and the fixing hole 410 are further limited, and the chest lead electrode 200 can move in the range of the fixing hole 410 in use, so that when different people use different people, the positions of the chest lead electrodes 200 of different people can be slightly different, and the chest lead electrodes 200 can be suitable for different people by moving in the range of the fixing hole 410; therefore, the electrocardiogram chest lead has wider application range.
The above description of the embodiments is only intended to illustrate the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several modifications can be made to the present invention, and these modifications will fall within the protection scope of the claims of the present invention.

Claims (9)

1. A novel electrocardiogram chest lead convenient to use comprises a chest lead wire and chest lead electrodes arranged at the first end of the chest lead wire, wherein the second end of the chest lead wire is connected with an instrument connector; the chest lead wire is provided with a chest lead bus at the second end close to the chest lead wire, and the chest lead bus is used for branching and connecting six chest lead wires to the instrument connector; still include stock solution portion, stock solution portion is internal to have disinfection alcohol or humidification liquid, stock solution portion is provided with the liquid outlet, the liquid outlet leads the position of chest lead electrode and human contact with disinfection alcohol or humidification liquid.
2. The novel electrocardiogram chest lead for convenient use according to claim 1, wherein the length of said chest lead branch is 10cm-15 cm.
3. The novel electrocardiogram chest lead convenient to use according to claim 1, wherein said chest lead electrode is a suction ball type chest electrode, said suction ball type chest electrode comprises a metal suction cup, an elastic suction ball and an electrode plate, said metal suction cup is communicated with said elastic suction ball, said electrode plate is fixedly connected with said metal suction cup; a first hollow cylinder is arranged on the metal sucker, and a second hollow cylinder is arranged on the elastic sucker; wherein the second hollow cylinder is sleeved on the outer wall of the first hollow cylinder in a sealing manner.
4. The novel electrocardiogram chest lead convenient to use according to claim 3, wherein said liquid storage portion comprises a liquid storage cavity, a liquid guiding channel and a liquid outlet member which are mutually communicated, wherein said liquid storage cavity is arranged on the outer surface of said elastic suction ball, said liquid outlet is arranged on said liquid outlet member, and one side of said liquid outlet member where said liquid outlet is arranged is attached on the outer surface of said metal sucker.
5. The novel electrocardiogram chest lead convenient to use according to claim 4, wherein an elastic partition plate with a slit is arranged between said liquid storage cavity and said liquid guiding channel, and a slit is arranged on said elastic partition plate; when the liquid storage cavity is not acted by external force, the slit is closed, and the disinfecting alcohol or the humidifying liquid is left in the liquid storage cavity; when the liquid storage cavity is pressed by external force, the slit is opened, and the disinfection alcohol or the humidification liquid flows into the liquid guide channel from the liquid storage cavity.
6. The novel electrocardiogram chest lead convenient to use according to claim 5, wherein an elastic spherical surface is arranged on the outer surface of said elastic suction ball, and the space between said elastic spherical surface, said outer surface of said elastic suction ball and said elastic partition plate forms said liquid storage cavity; and a third hollow cylinder is sleeved on the outer side surface of the second hollow cylinder, the first end of the third hollow cylinder and the first end of the second hollow cylinder are connected onto an elastic partition plate, and the space among the third hollow cylinder, the second hollow cylinder and the elastic partition plate forms the liquid guide channel.
7. The novel electrocardiogram chest lead convenient to use according to claim 6, wherein said elastic spherical surface is provided with a liquid inlet, said liquid inlet is provided with an openable sealing plug.
8. The novel electrocardiogram chest lead convenient to use according to claim 7, further comprising a fixing band, wherein six fixing holes are arranged on said fixing band, and the positions of said fixing holes on said fixing band correspond to the positions of the chest lead electrodes on the human body; the third hollow cylinder is of a hard structure, and a clamping plate is arranged on the outer surface of the third hollow cylinder; when the chest lead electrode is used, the fixing band is fixed on a human body, the fixing hole is sleeved on one side, away from the metal sucker, of the clamping plate, and the chest lead electrode is fixed on the human body.
9. The novel electrocardiogram chest lead convenient to use according to claim 8, wherein said clamping plate is a circular plate concentric with said third hollow cylinder, and the cross section of said fixing hole is circular; the maximum cross-sectional diameter of the clamping plate is larger than the cross-sectional diameter of the fixing hole, and the cross-sectional diameter of the fixing hole is larger than the cross-sectional diameter of the outer side surface of the third hollow cylinder.
CN202021187335.6U 2020-06-23 2020-06-23 Novel electrocardiogram chest lead convenient to use Expired - Fee Related CN213588291U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021187335.6U CN213588291U (en) 2020-06-23 2020-06-23 Novel electrocardiogram chest lead convenient to use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021187335.6U CN213588291U (en) 2020-06-23 2020-06-23 Novel electrocardiogram chest lead convenient to use

Publications (1)

Publication Number Publication Date
CN213588291U true CN213588291U (en) 2021-07-02

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ID=76582891

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021187335.6U Expired - Fee Related CN213588291U (en) 2020-06-23 2020-06-23 Novel electrocardiogram chest lead convenient to use

Country Status (1)

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CN (1) CN213588291U (en)

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Granted publication date: 20210702