External defibrillator

Abstract

To provide an external defibrillator capable of preventing water from being accumulated in a paddle storage part and improving convenience in defibrillation processing by a user.SOLUTION: An external defibrillator includes a long hole formed by cutting out a side wall of a storage part over a vertical direction, in which one end is opened at the upper end position of the storage part and the other end reaches at least the bottom surface of the storage part, and whose hole width is larger than the thickness of a flange of the external paddle.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to external defibrillators. [Background technology]

[0002] For example, external defibrillators are known as devices that attempt to eliminate cardiac fibrillation by administering an electric shock to patients whose hearts have gone into ventricular fibrillation and are no longer able to pump blood around the body, in order to restore normal cardiac function.

[0003] An external defibrillator includes an external paddle and a defibrillator main body that generates electrical energy to be supplied to the external paddle, as shown in, for example, Patent Document 1. The defibrillator main body can also obtain information related to the patient's cardiac condition (electrocardiogram ECG) through the external paddle.

[0004] An upper case having a paddle receiving portion is provided on the upper surface of the defibrillator main body. The paddle receiving portion has a concave receiving space large enough to receive the flange of the external paddle.

[0005] In addition, the paddle housing has a holding part that holds the external paddle so that it does not jump out of the paddle housing. The holding part has, for example, a flexible engagement claw that engages with the side of the external paddle. Since the external paddle is held by the holding part, for example, when a user carries the defibrillator with the external paddle housed in the paddle housing, the external paddle is prevented from jumping out of the paddle housing. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2004-181111 A Summary of the Invention [Problem to be solved by the invention]

[0007] Incidentally, external defibrillators are used not only indoors but also outdoors. When used outdoors, it is assumed that the external defibrillator may be exposed to rain or the like. Although the external defibrillator itself is waterproof and dustproof, if water accumulates in the paddle housing, it will adversely affect the electrical test. Therefore, if water accumulates in the paddle housing, the user needs to remove the water with a cloth or the like, which is time-consuming.

[0008] The present invention has been made in consideration of the above points, and provides an external defibrillator that can prevent water from accumulating in the paddle housing and improve the convenience of defibrillation treatment for the user. [Means for solving the problem]

[0009] One embodiment of the external defibrillator of the present invention comprises: A pair of external paddles each having an electrode portion capable of coming into contact with a body surface of a patient; a defibrillator main body to which the external paddle is connected and which supplies electrical energy for defibrillation to the external paddle; A housing portion having a concave housing space for housing the external paddle; a communication portion formed in the storage portion such that a bottom portion of the storage space is in communication with the outside; having The communication portion is shaped so that a part of the extracorporeal paddle can be engaged therewith. Effect of the Invention

[0010] According to the present invention, the communication portion prevents water from accumulating in the paddle accommodating portion and also makes it possible to lean the external paddle against it, thereby realizing an external defibrillator that can prevent water from accumulating in the paddle accommodating portion and improve the convenience of defibrillation treatment for the user. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a front view of an external defibrillator according to an embodiment; [Diagram 2] A perspective view showing the configuration of the upper part of an external defibrillator. [Diagram 3] Plan view showing the upper structure of the external defibrillator [Figure 4] FIG. 1 is a perspective view showing the relationship between the external paddle with the adult electrode unit attached and the container unit. [Diagram 5] FIG. 1 is a perspective view showing the relationship between the external paddle and the container with the adult electrode unit removed. [Figure 6] Cross-sectional view showing the external paddle with the adult electrode attached. [Figure 7] Cross-sectional view showing the storage state with the adult electrode part removed from the external paddle [Figure 8] FIG. 1 is a perspective view showing a state in which an external paddle is leaned against a storage unit. [Figure 9] FIG. 1 is a plan view showing a state in which the external paddle is placed against the container. [Figure 10] FIG. 11 is a cross-sectional view showing a configuration of another embodiment. [Figure 11] FIG. 3 is a cross-sectional view showing a configuration of another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0013] <1> Overall configuration of an external defibrillator FIG. 1 is a front view of an external defibrillator 10 according to the present embodiment.

[0014] The external defibrillator 10 has a defibrillator main body 20 and a pair of left and right external paddles 30. The external paddles 30 are connected to the defibrillator main body 20 by a connection cord 50. The defibrillator main body 20 generates electrical energy for defibrillation and supplies this electrical energy to the external paddles 30 via the connection cord 50. A user performs defibrillation by grasping the handle portion 30a of the external paddles 30 and pressing the external paddles 30 against the patient's chest.

[0015] The defibrillator main body 20 is provided with an output energy setting knob 71, operation keys 72, a display unit 73, etc. A user can set the defibrillation energy and various modes by operating the output energy setting knob 71 and the operation keys 72. The display unit 73 displays an electrocardiogram of the patient, etc.

[0016] A main body handle portion 60 is provided on the upper portion of the defibrillator main body 20, and the user can lift and move the external defibrillator 10 by grasping the main body handle portion 60.

[0017] Other configurations of the external defibrillator 10 may be of known construction and therefore will not be described here.

[0018] <2> Paddle storage section configuration Next, the configuration of the paddle housing portion (hereinafter simply referred to as the "housing portion") of this embodiment will be described with reference to Figs. 2 to 11.

[0019] 2 and 3 are respectively a perspective view and a plan view showing the configuration of the upper part of the external defibrillator 10. Fig. 4 is a perspective view showing the external paddle 30 and the housing part 100 with the adult electrode part 40 attached. Fig. 5 is a perspective view showing the external paddle 30 and the housing part 100 with the adult electrode part 40 removed.

[0020] 2, the accommodation portion 100 is formed in an upper case 20a attached to an upper portion of the defibrillator main body 20. The accommodation portion 100 has a concave accommodation space for accommodating the external paddle 30.

[0021] Specifically, as can be seen from Figures 4 and 5, the upper opening of the storage section 100 is sized to fit the outer shape of the flange 31 of the external paddle 30, and the bottom opening of the storage section 100 is sized to fit the outer shape of the adult electrode section 40. The depth of the storage section 100 is approximately equal to the height from the lower surface of the adult electrode section 40 to the flange 31 when the adult electrode section 40 is attached. This allows the external paddle 30 to fit exactly inside the storage section 100 without swaying sideways when the adult electrode section 40 is attached.

[0022] A test electrode 110 is provided on the bottom surface 101 of the housing 100. The test electrode 110 is a metal plate in the shape of a leaf spring, and one end of the test electrode 110 is provided so as to protrude upward from the bottom surface 101. The other end of the test electrode 110 is connected to an electric circuit (not shown) in the defibrillator main body 20.

[0023] A child electrode P1 (Figs. 6 and 7) is formed below the flange 31 of the external paddle 30. The adult electrode section 40 is attached to the lower part of the external paddle 30 so as to cover the child electrode P1. In the present embodiment, the adult electrode section 40 can be attached to and detached from the external paddle 30 by sliding. An adult electrode P2 (Fig. 6) is formed on the underside of the adult electrode section 40. The adult electrode P2 has a larger area than the child electrode P1. The attachment structure of the adult electrode section 40 is not limited to that of the embodiment, and in short, any structure may be used as long as the adult electrode P2 can be freely attached below the child electrode P1.

[0024] When the external paddle 30 is housed in the housing 100, the adult electrode P1 or the child electrode P2 comes into contact with the test electrode 110, thereby enabling an electrical test.

[0025] In addition to this configuration, as can be seen from FIGS. 4 and 5, a flange 31a is formed below the flange 31.

[0026] 2 and 3, the storage unit 100 is provided with an advancing / retreating unit 21. The advancing / retreating units 21 are provided in positions facing each other in each storage unit 100. In other words, two advancing / retreating units 21 are provided per storage unit 100.

[0027] In other words, the advancing / retreating part 21 is provided on the side of the storage part 100 that faces the extracorporeal paddle 30 stored in the recess. The advancing / retreating part 21 is configured to be able to advance and retreat in the direction of the extracorporeal paddle 30. The advancing / retreating part 21 regulates the upward movement of the extracorporeal paddle 30 stored in the storage part 100. The detailed configuration and operation of the advancing / retreating part 21 will be described later.

[0028] <3> Retention of external paddles in the enclosure Next, a structure for holding the external paddle 30 in the housing part 100 according to this embodiment will be described in detail.

[0029] 6 and 7 are cross-sectional views of the upper case 20a and the external paddle 30 cut by a vertical plane passing through the advance / retract part 21 in a state in which the external paddle 30 is housed in the housing part 100. In particular, Fig. 6 is a cross-sectional view in a state in which the adult electrode part 40 is attached to the external paddle 30, and Fig. 7 is a cross-sectional view in a state in which the adult electrode part 40 is removed from the external paddle 30.

[0030] First, the configuration of the advance / retract part 21 will be described in detail. The advance / retract part 21 is a member made of resin and has an L-shaped cross section. The base part of the advance / retract part 21 is fixed to the upper case 20a by the screws 21b. As described above, in the external defibrillator 10, two advance / retract parts 21 are provided for each housing part 100, so that a total of four advance / retract parts 21 are provided. The four screws 21b that fix each advance / retract part 21 to the upper case 20a also function to fix the upper case 20a to the defibrillator main body 20. In other words, the tips of the screws 21b reach the defibrillator main body 20.

[0031] As a result, in this embodiment, the screws 21b can be used to fix the advance / retract part 21 to the upper case 20a and at the same time fix the upper case 20a to the defibrillator body 20. Because the advance / retract part 21 is not molded integrally with the upper case 20a but is a separate body, if the advance / retract part 21 is damaged, it is only necessary to replace the damaged advance / retract part 21 without replacing the entire upper case 20a. As a result, maintainability can be improved.

[0032] A claw 21a is formed near the tip of the rising part of the advancing / retreating part 21, protruding in the direction of the extracorporeal paddle 30. The claw 21a is movable in the forward direction indicated by the arrow d1 and in the backward direction indicated by the arrow d2 due to the elasticity of the advancing / retreating part 21 itself.

[0033] Next, the operation of the advancing and retreating portion 21 will be described.

[0034] 6, when the external paddle 30 to which the adult electrode section 40 is attached is moved in the accommodation direction c2 by the user and accommodated in the accommodation section 100, the claw 21a of the advance / retract section 21 abuts against the upper surface of the second flange 31a, thereby restricting the movement of the external paddle 30 in the deviation direction c1 from the accommodation section 100 and holding the external paddle 30 at a predetermined position in the accommodation section 100. This predetermined position is a position where the surface of the adult electrode P2 approximately coincides with the bottom surface section 101 of the accommodation section 100.

[0035] Strictly speaking, at this predetermined position, the surface of the adult electrode P2 is slightly raised above the bottom surface 101 of the housing 100. This is because the external paddle 30 is biased in the deviation direction c1 by the spring force of the test electrode 110. In other words, the surface of the adult electrode P2 is positioned at a predetermined distance slightly raised above the bottom surface 101 of the housing 100 by the positional relationship between the claw 21a and the flange 31a and the biasing force of the test electrode 110. As a result, at the above-mentioned predetermined position, the bottom surface 101 does not come into contact with the surface of the adult electrode P2, but only the test electrode 110 comes into contact with it, improving the reliability of the electrical connection between the adult electrode P2 and the test electrode 110.

[0036] When performing defibrillation, the user holds the handle portion 30a of the external paddle 30 and pulls the external paddle 30 in the deviation direction c1 from the stored position in Fig. 6. At this time, if the pulling force overcomes the elastic force of the advancing / retracting part 21, the claw 21a of the advancing / retracting part 21 moves in the backward direction d2. As a result, the claw 21a gets over the second flange 31a, and the external paddle 30 moves in the deviation direction c1.

[0037] 7, when the external paddle 30 from which the adult electrode section 40 has been removed is housed in the housing section 100, the claws 21a of the advance / retract section 21 come into contact with the upper surface of the first flange 31, restricting the movement of the external paddle 30 in the direction of deviation c1 from the housing section 100, and the external paddle 30 is held at a predetermined position in the housing section 100. This predetermined position is a position where the surface of the pediatric electrode P1 substantially comes into contact with the bottom surface section 101 of the housing section 100.

[0038] Strictly speaking, at this predetermined position, the surface of the pediatric electrode P1 is slightly raised above the bottom surface 101 of the housing 100. This is because the external paddle 30 is urged in the deviation direction c1 by the spring force of the test electrode 110. In other words, the surface of the pediatric electrode P1 is positioned in a state where it is slightly raised a predetermined distance above the bottom surface 101 of the housing 100 due to the positional relationship between the claw 21a and the flange 31 and the urging force of the test electrode 110. As a result, at the above-mentioned predetermined position, the bottom surface 101 does not come into contact with the surface of the pediatric electrode P1, but only the test electrode 110 comes into contact with it, improving the reliability of the electrical connection between the pediatric electrode P1 and the test electrode 110.

[0039] When performing defibrillation, the user holds the handle portion 30a of the external paddle 30 and pulls the external paddle 30 in the deviation direction c1 from the stored position in Fig. 7. At this time, if the pulling force overcomes the elastic force of the advancing / retracting part 21, the claw 21a of the advancing / retracting part 21 moves in the backward direction d2. As a result, the claw 21a gets over the first flange 31 and then the second flange 31a, and the external paddle 30 moves in the deviation direction c1.

[0040] In this way, the first and second flanges 31, 31a and the advance / retract portion 21 allow both the pediatric electrode P1 and the adult electrode P2 to abut against the test electrode 110 with a constant force. As a result, the contact pressure between the pediatric electrode P1 and the test electrode 110 and the contact pressure between the adult electrode P2 and the test electrode 110 become substantially the same, making it possible to perform an electrical test under uniform contact resistance, improving the reliability of the electrical test. For example, the reliability of the electrical test is improved compared to a case in which the user presses the external paddle 30 downward to ensure contact with the test electrode 110.

[0041] <4> Placing the external paddle in the container In this embodiment, the container 100 is designed so that the extracorporeal paddle 30 can be leaned against it.

[0042] 8 and 9 are respectively a perspective view and a plan view showing the external paddle 30 leaned against the housing part 100. Although Fig. 8 and Fig. 9 show the external paddle 30 with the adult electrode part 40 attached leaned against it, it is of course also possible to lean the external paddle 30 with the adult electrode part 40 removed.

[0043] A long hole 22 is formed in the side wall of the storage part 100. The long hole 22 is formed by cutting out the side wall of the upper case 20a (which may be called the side wall of the storage part 100) in the vertical direction, one end of which is open at the upper end position of the upper case 20a (which may be called the upper end position of the storage part 100) and the other end (lower end) of which reaches the bottom surface part 101 of the upper case 20a (which may be called the bottom surface part 101 of the storage part 100).

[0044] A guide groove 23 extending in the vertical direction is formed on the wall surface of the upper case 20a facing the long hole 22. The groove width of the guide groove 23 is larger than the thickness of the flange 31 of the extracorporeal paddle 30.

[0045] As can be seen from FIGS. 8 and 9, the extracorporeal paddle 30 can be leaned against the housing portion 100 by inserting the flange 31 into the long hole 22 and the guide groove 23 from above.

[0046] The long hole 22 and the guide groove 23 are formed at positions such that the handle portion 30a of the extracorporeal paddle 30 is disposed outside the storage portion 100 when the flange 31 of the extracorporeal paddle 30 is inserted into the long hole 22 and the guide groove 23. This allows the user to easily grasp the handle portion 30a from outside the storage portion 100. In addition, the handle portion 30a and the flange 31 hold the wall surface of the upper case 20a between them, thereby stably standing the handle portion 30.

[0047] When the external defibrillator 10 is actually used, the user first removes the external paddle 30 from the housing 100 and applies conductive gel to the electrode P1 or P2 to be used next. Next, the user turns on the power of the external defibrillator 10 and presses the external paddle 30 against the patient's chest. In this state, the external defibrillator 10 obtains an electrocardiogram of the patient.

[0048] Next, when the user presses the shock button, electrical energy is supplied to the patient from the external paddles 30 to perform electrical defibrillation. Next, the user performs treatment such as cardiac massage on the patient as necessary. After that, the user presses the external paddles 30 against the patient's chest again as necessary to perform defibrillation treatment.

[0049] Here, when there are two or more people performing treatment, the roles can be divided between the person performing defibrillation using the external paddles 30 and the person performing treatment such as cardiac massage. Therefore, after performing the first defibrillation treatment, the person performing defibrillation treatment can wait while holding the external paddles 30 while the other person is performing treatment such as cardiac massage, and then perform the second defibrillation treatment.

[0050] On the other hand, when there is only one person performing treatment, the person performing the defibrillation treatment must also perform treatment such as cardiac massage. In this case, the external paddles 30 must be placed somewhere when performing treatment such as cardiac massage.

[0051] In the present embodiment, the external paddle 30 can be conveniently leaned against the housing 100 as shown in Figs. 8 and 9. In particular, placing the external paddle 30 directly on the floor or ground is not preferable since the conductive gel may become dirty. Also, if the external paddle 30 is completely housed in the housing 100 as shown in Figs. 6 and 7, the conductive gel may adhere to the bottom 101 of the housing 100 and the test electrode 110, which is not preferable. According to the configuration of the present embodiment, such inconveniences can be avoided.

[0052] As described above, the lower end of the long hole 22 reaches the bottom surface 101 of the upper case 20a. This allows the long hole 22 to function as a drainage hole, preventing water from accumulating in the storage section 100.

[0053] Furthermore, in this embodiment, the bottom surface 101 of the housing 100 is inclined so as to become lower toward the lower end of the slot 22. This can more effectively prevent water from pooling in the housing 100. It is also preferable to make the height of the lower end of the slot 22 lower than the height of the mounting portion of the test electrode 110. This can prevent the test electrode 110, which is easily affected by water pooling, from being immersed in water.

[0054] In this manner, according to the configuration of this embodiment, the long hole 22 has the function of draining water from the storage section 100 and the function of leaning the extracorporeal paddle 30 against it, so that the water draining function and the leaning function can be achieved with a simple configuration.

[0055] <5> Effects of the embodiment As described above, the external defibrillator 10 of this embodiment has a long hole 22 cut vertically through the side wall of the accommodating section 100, one end of which opens at the upper end position of the accommodating section 100 and the other end of which reaches at least the bottom surface 101 of the accommodating section 100, and the hole width of which is greater than the thickness of the flange 31 of the external paddle 30.

[0056] As a result, the long hole 22 prevents water from accumulating in the housing 100, and also makes it possible to lean the external paddle 30 against the flange 31. As a result, it is possible to realize an external defibrillator 10 that can prevent water from accumulating in the housing 100 and improves the convenience of defibrillation treatment for the user.

[0057] In particular, in the above-described embodiment, the flange 31 is inserted into the long hole 22, so that the external paddle 30 can be stably engaged with the storage section 100 regardless of whether the adult electrode section 40 is attached to the external paddle 30 or not, and a stable leaning can be achieved.

[0058] <6> Other embodiments The above-described embodiment is merely an example of the embodiment of the present invention, and the technical scope of the present invention should not be interpreted as being limited by the embodiment. In other words, the present invention can be embodied in various forms without departing from the gist or main characteristics of the present invention.

[0059] In the above embodiment, the second engagement portion is configured to have a first flange 31 having an upper surface that abuts against the advancing / retreating portion 21 at the first storage position, and a second flange 31a having an upper surface that abuts against the advancing / retreating portion 21 at a second storage position that is lower than the first storage position, but the present invention is not limited to this. In short, it is sufficient that the first and second engagement portions are configured so as to be able to hold the extracorporeal paddle 30 at first and second storage positions that are different in depth within the storage portion 100.

[0060] 10 and 11, in which the same reference numerals are assigned to parts corresponding to those in Fig. 6 and Fig. 7, are cross-sectional views showing the configuration of another embodiment. In the configuration in Fig. 10 and Fig. 11, the advancing / retreating part 21 as the first engaging part has a first advancing / retreating member (claw 21a) which engages with the second engaging part (flange 31a) at the first accommodation position, and a second advancing / retreating member (claw 21c) which engages with the second engaging part (flange 31a) at the second accommodation position which is lower than the first accommodation position.

[0061] As shown in FIG. 10, the difference t1 between the position of the first advancing / retracting member (claw 21a) and the position of the second advancing / retracting member (claw 21c) is equal to the difference t2 in the thickness of the extracorporeal paddle 30 when the adult electrode section 40 is attached and when the adult electrode section 40 is removed.

[0062] With this configuration, the same effects as those of the above-described embodiment can be obtained.

[0063] 10, when the external paddle 30 to which the electrode section for adults 40 is attached is housed in the housing section 100, the claws 21a of the advance / retract section 21 come into contact with the upper surface of the flange 31a, thereby restricting the movement of the external paddle 30 in the direction of deviation c1 from the housing section 100, and the external paddle 30 is held at a predetermined position within the housing section 100.

[0064] On the other hand, as shown in FIG. 11, when the extracorporeal paddle 30 from which the adult electrode section 40 has been removed is stored in the storage section 100, the claws 21c of the advance / retract section 21 abut against the upper surface of the flange 31a, thereby restricting the movement of the extracorporeal paddle 30 in the direction of deviation c1 from the storage section 100, and the extracorporeal paddle 30 is held in a predetermined position within the storage section 100.

[0065] In the above embodiment, the advancing / retreating part 21 is formed as the first engaging part in the storage part 100, and the flanges 31, 31a are formed as the second engaging part in the extracorporeal paddle 30. However, the present invention is not limited to this. For example, a flange may be formed as the first engaging part in the storage part 100, and the advancing / retreating part may be formed as the second engaging part in the extracorporeal paddle 30. Furthermore, the first engaging part and the second engaging part are not limited to the advancing / retreating part 21 and the flanges 31, 31a as in the above embodiment, and the first engaging part and the second engaging part may be configured to hold the extracorporeal paddle at first and second storage positions having different depths in the storage part.

[0066] In the above embodiment, the long hole 22 is used to prevent water from accumulating in the storage section 100 and to allow the extracorporeal paddle 30 to stand upright, but the present invention is not limited to this. In short, a communication section may be formed in the storage section 100 so that the bottom of the storage space is connected to the outside, and the shape of this communication section may be such that a part of the extracorporeal paddle 30 can be engaged therewith. With this configuration, the communication section can drain water from within the storage space and allow the extracorporeal paddle to stand upright.

[0067] However, the long hole 22 in the above embodiment does not require the formation of unevenness in the accommodation space 100, so that the adhesion of dirt to the accommodation space 100 is reduced and cleaning is easy. Therefore, there is a great advantage for medical devices in that the functions of draining water and leaning the device against something can be realized hygienically. [Industrial Applicability]

[0068] The present invention is widely applicable to external defibrillators having a paddle receiving portion. [Explanation of symbols]

[0069] 10 External defibrillator 20 Defibrillator body 20a Upper Case 21 Advancement and retreat section 21a, 21c Engagement claw 21b Screw 22 long hole 23 Guide groove 30 External Paddle 30a Handle 31, 31a flange 40 Adult electrode section 50 Connection cord 60 Main body handle 100 Storage unit 101 Bottom part 110 Test Electrode

Claims

1. A pair of external paddles each having an electrode portion capable of coming into contact with a body surface of a patient; a defibrillator main body to which the external paddle is connected and which supplies electrical energy for defibrillation to the external paddle; A housing portion having a concave housing space for housing the external paddle; a communication portion formed in the storage portion such that a bottom portion of the storage space is in communication with the outside; having The communication portion is shaped so that a part of the extracorporeal paddle can be engaged therewith. External defibrillator.

2. The communication portion is a long hole formed by cutting a side wall of the storage section in the vertical direction, one end of the long hole being open at the upper end position of the storage section and the other end reaching at least the bottom surface of the storage section, and a hole width being larger than a thickness of a flange of the extracorporeal paddle; 2. The external defibrillator of claim 1.

3. Further, a guide groove extending in the vertical direction is formed on a side wall of the housing portion facing the long hole, and a groove width of the guide groove is larger than a thickness of a flange of the extracorporeal paddle.

3. The external defibrillator of claim 2.

4. the long hole is formed at a position such that a handle portion of the extracorporeal paddle is disposed outside the housing portion when the flange of the extracorporeal paddle is inserted into the long hole; 4. An external defibrillator according to claim 2 or 3.

5. The bottom surface of the storage portion is inclined so as to become lower toward the other end of the slot.

5. An external defibrillator according to any one of claims 2 to 4.

6. An electrode is provided on the bottom surface of the storage portion, The height of the other end of the long hole is lower than the height of the mounting portion of the electrode.

6. An external defibrillator according to any one of claims 2 to 5.

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