WO2014169484A1

WO2014169484A1 - Finger clamping type oxyhemoglobin saturation instrument and reset spring assembly used for finger clamping type apparatus

Info

Publication number: WO2014169484A1
Application number: PCT/CN2013/074462
Authority: WO
Inventors: 潘卫江
Original assignee: Pan Weijiang
Priority date: 2013-04-19
Filing date: 2013-04-19
Publication date: 2014-10-23

Abstract

A finger clamping type oxyhemoglobin saturation instrument comprises an upper housing, a lower housing, and a reset spring (305, 405, 507). A protruding support seat (302, 402, 524) is disposed on one of the upper housing and the lower housing, and a support seat opening (310, 525) is disposed on the other of the upper housing and the lower housing. A free end (3021) of the support seat (302, 402, 524) is inserted into the corresponding housing through the support seat opening (310, 525). The free end (3021) of the support seat is provided with a spring hole (303, 403). An inserting end (3051, 4051) of the reset spring (305, 405, 507) is inserted into the spring hole (303, 403) and is fixed to the support seat (302, 402, 524) by using a cap (306, 406, 520). A front end (3052, 4052) of the reset spring (305, 405, 507) extends forwards in the corresponding housing from the support seat (302, 402, 524) and is in contact with an inner surface of the corresponding housing. The inner surface of the corresponding housing presses the front end (3052, 4052) of the reset spring (305, 405, 507) to generate elastic deformation, so that a clamping force is generated between the upper housing and the lower housing. Also provided is a reset spring assembly used for the finger clamping type apparatus. The finger clamping type oxyhemoglobin saturation instrument and the reset spring assembly used for the finger clamping type apparatus are convenient to assemble, and stable and reliable in structure.

Description

Finger-clip oximeter and return spring assembly for finger-clip device

Field of the Invention This invention relates to finger-clip devices, and more particularly to a finger-clip oximeter and a return spring assembly for a finger-clip device. Background technique

The finger-clip oximeter generally consists of an upper housing, a lower housing, and a finger insertion hole between the upper and lower housings. The fixing, opening and closing functions are often achieved by the return spring between the upper and lower housings. As shown in FIG. 1, it is a schematic cross-sectional view of a conventional finger-clip oximeter disclosed in Japanese Patent Application No. 2005-330873, which includes: an upper casing 1. The lower casing 2, the finger insertion hole 5 formed between the upper and lower casings, and the return spring 20, and the proximal ends 20a, 20b of the return spring 20 are fixedly mounted on the support 11 provided on the lower casing 2. The distal ends 20d, 20e of the return spring 20 are in contact with the inner surface of the upper casing 1 at least at the point of action 21, 22, forcing the upper casing 1 to tend to close with the lower casing 2. When the finger is inserted between the upper and lower casings 1 and 2 from the insertion hole 5, the return spring 20 maintains a certain force to grip the finger to ensure the measurement progress.

However, the return spring 20 of this construction is very inconvenient to install. Since the proximal end 20a of the return spring 20 is wound in a loop shape on the protruding shaft of the holder 11, and the free end 20b is fixed to one side of the holder 11, the distal end 20d, 20e can be provided with a downward force. Therefore, the assembly spring needs to first fix the return spring 20 to the shaft of the support 11, and then extend the support 11 into the hole in the upper casing 1, and the two sides need to be matched at the same time to complete such installation. Alternatively, if the support 11 is first loaded into the upper casing 1 and the return spring 20 is attached, it is necessary to overcome the spring force to insert the ring spring into the shaft of the support 11, and the return spring 20 may be damaged. Therefore, neither of these methods is good.

At the same time, the oximeter using the upper and lower casings 1 and 2 and the return spring 20 may cause another problem. Since the support 11 on the lower casing 2 can directly protrude into the upper casing 1, and only the fixing between the upper and lower casings 1 and 2 is performed by the return spring 20, therefore, if there is an external force to move up and down When the housings 1, 2 are pulled apart, the return spring 20 may be pulled out from the opening of the upper housing 1 by the holder 11, which may cause permanent damage of the return spring.

Furthermore, the return spring 20 presses the upper housing 1 through the distal end 20d, 20e to close it with the lower housing 2, but the receiving point of the distal end 20d, 20e of the return spring 20 on the upper housing 1 is located in the upper housing 1 The front, therefore, if used for some reason, when the rear of the upper casing 1 is opened, the complex The position spring 20 may not be able to close the rear of the upper casing 1, affecting the overall aesthetics of the oximeter. Summary of the invention

Accordingly, it is an object of the present invention to provide a finger grip type oximeter that is easy to assemble.

Another object of the present invention is to provide a return spring assembly for a finger-clip device that facilitates the assembly of a finger-clip device.

In order to achieve the above object, the present invention provides a finger-clip oximeter, comprising: an upper casing, a lower casing and a return spring; one of the upper casing and the lower casing is provided with a convex bearing One of the other is provided with a seat opening corresponding to the seat, and the free end of the seat is inserted into the corresponding housing through the seat opening, and the upper case and the lower case are assembled together, a free end of the support is provided with a spring hole, the insertion end of the return spring is inserted into the spring hole and the insertion end is fixed to the seat by a cap from which the front end of the return spring is a corresponding inner casing extends forwardly and contacts an inner surface of the corresponding casing, and when the upper casing and the lower casing are relatively open, an inner surface of the corresponding casing presses a front end of the return spring to generate elasticity The deformation generates a clamping force between the upper casing and the lower casing to clamp the finger to be tested.

Wherein, a spring groove for guiding the return spring to the front is provided in front of the spring hole of the holder.

Wherein, the cap is slightly larger than the seat opening.

Wherein, the support is provided with a screw hole, and the cap is fixed to the support by screws.

Wherein, the insertion end of the return spring is linear.

Wherein, the insertion end of the return spring is U-shaped.

Wherein, the spring hole of the support is U-shaped.

Wherein the return spring includes a rear end that extends rearwardly from the holder within the corresponding housing and contacts an inner surface of the corresponding housing, when the upper housing and the lower housing When the front end is relatively open, the rear end presses the inner surface of the corresponding housing to cause the upper and lower housings to be relatively open.

Wherein, the return spring is a torsion spring.

The invention also provides a finger-clip oximeter, comprising: an upper casing assembled with an upper half of the upper casing and a lower half of the upper casing, an upper half of the lower casing and a lower half of the lower casing a lower casing and a return spring; the upper half of the lower casing is provided with a convex support, and the lower half of the upper casing is provided with a seat opening corresponding to the support, and the free end of the support passes through the The holder opening is inserted into the upper housing, the upper housing and the lower housing are assembled together, and the free end of the holder is provided with a spring hole, and the insertion end of the return spring is inserted into the spring hole and is replaced by the cap The insertion end is fixed to the support, the complex The front end of the spring extends from the support in the upper casing and contacts the inner surface of the lower half of the upper casing. When the upper casing and the lower casing are relatively open, the inner surface of the lower half of the upper casing is pressed. The front end of the return spring is elastically deformed to generate a clamping force between the upper casing and the lower casing to clamp the finger to be tested; the lower half of the lower casing is provided with a battery cover and a self-recovering push battery The cover button is configured to form a cartridge body for accommodating the battery, the battery cover button is assembled on one side of the lower half of the lower case, and the battery cover is assembled on the other side below the lower half of the lower case, in the closed state of the battery cover, the battery One end of the cover is provided with a hook embedded in the inner wall of the lower half of the lower case, and the other end of the battery cover abuts against the battery cover button.

The present invention also provides a return spring assembly for a finger-clip device having an upper housing and a lower housing that can be in a relative open/close motion, the return spring assembly comprising: a reset a spring and a support; when the return spring assembly is used, the support is convexly fixed to one of the upper casing and the lower casing, and the upper casing and the lower casing are respectively provided corresponding to the a support opening of the support is inserted into the corresponding housing through the free end of the support through the support opening, the upper and lower housings are assembled together, and the free end of the support is provided with a spring hole Inserting the insertion end of the return spring into the spring hole and fixing the insertion end to the seat by a cap, the front end of the return spring extending forward from the seat in the corresponding housing and contacting An inner surface of the corresponding casing, when the upper casing and the lower casing are relatively open, the inner surface of the corresponding casing presses the front end of the return spring to be elastically deformed in the upper casing And the clamping force is generated between the lower casings .

Wherein, a spring groove for guiding the return spring to the front is provided in front of the spring hole of the holder. The cap is slightly larger than the seat opening. The support is provided with a screw hole, and the cap is fixed to the support by a screw. The insertion end of the return spring is linear. Alternatively, the insertion end of the return spring is U-shaped, and the spring hole of the support is U-shaped. The return spring includes a rear end that extends rearwardly from the seat within the corresponding housing and contacts an inner surface of the corresponding housing, when the upper and lower housings are relatively open, The rear end presses the inner surface of the corresponding housing such that the upper and lower housings tend to open relatively. The return spring is a torsion spring.

In summary, the finger-clamp oximeter of the present invention is convenient to assemble, and the structure is stable and reliable. The return spring assembly for a finger-clip device of the present invention facilitates assembly of the finger-clip device and is structurally stable and reliable. DRAWINGS

The technical solutions and other advantageous effects of the present invention will be apparent from the following detailed description of the embodiments of the invention.

In the drawings, 1 is a schematic cross-sectional view of a conventional finger-clip oximeter;

2 is a schematic cross-sectional view of a finger clip type oximeter of the present invention;

3 is a partial exploded view of the first preferred embodiment of the finger-clip oximeter of the present invention; FIG. 4 is a view of the upper half of the lower case of the first preferred embodiment of the finger-clip oximeter of the present invention; Schematic diagram of the section;

Figure 5 is a schematic view of a return spring of a first preferred embodiment of the finger-clip oximeter of the present invention;

6A is a top plan view of the upper half of the lower case of the first preferred embodiment of the finger-clip oximeter of the present invention;

6B is a top plan view of the lower half of the upper case of the first preferred embodiment of the finger-clip oximeter of the present invention;

Figure 7 is a partial cross-sectional view showing a first preferred embodiment of the finger-clip oximeter of the present invention; Figure 8 is a partial exploded view of the second preferred embodiment of the finger-clip oximeter of the present invention; A cross-sectional view of the upper half of the lower case of the second preferred embodiment of the finger-clip oximeter of the present invention;

Figure 10 is a schematic view of a return spring of a second preferred embodiment of the finger-clip oximeter of the present invention;

Figure 11 is a plan view showing the upper half of the lower case of the second preferred embodiment of the finger-clip oximeter of the present invention;

Figure 12 is a partial cross-sectional view showing a second preferred embodiment of the finger-clip oximeter of the present invention; Figure 13 is an exploded view of the third preferred embodiment of the finger-clip oximeter of the present invention; The present invention is directed to the assembly of a third preferred embodiment of a clip-on oximeter. detailed description

2 is a schematic cross-sectional view of the finger-clip oximeter of the present invention, the finger-clip oximeter of the present invention comprises an upper shell upper portion 201, an upper shell lower half portion 202, a lower shell upper half portion 203 and The lower casing lower half 204 is formed, and the upper casing upper half 201 and the upper casing lower half 202 are assembled into an upper casing, and the lower casing upper half 203 and the lower casing lower half 204 are assembled into a lower casing.

3 to FIG. 7, FIG. 3 is a partial exploded view of the first preferred embodiment of the finger-clip oximeter of the present invention, and FIG. 4 is a cross-sectional view of the upper half of the lower case of the first preferred embodiment. 5 is a schematic view of the return spring of the first preferred embodiment, FIG. 6A is a plan view of the upper half of the lower case of the first preferred embodiment, and FIG. 6B is a plan view of the lower half of the upper case of the first preferred embodiment. Figure 7 is a partial cross-sectional view of the first preferred embodiment. In order to facilitate the observation of the internal structure, the upper half of the upper case of the upper case and the lower half of the lower case of the lower case are omitted in comparison with Fig. 2, Fig. 3 and Fig. 7. Upper half of the lower shell The upper portion 309 of the upper casing 301 is provided with a support opening 302 corresponding to the support base 302, and the free end 3021 of the support base 302 is inserted into the lower half of the corresponding upper casing through the support opening 310. The upper portion 309 and the upper half 301 of the lower case are assembled together, and after assembly, the lower half 309 of the upper case and the upper half 301 of the lower case are adjacent to each other at the front end, and are separated at an angle at the rear end. , forming a finger-clip structure. The free end 3021 of the holder 302 is provided with a spring hole 303, the insertion end 3051 of the return spring 305 is inserted into the spring hole 303 and the insertion end 3051 is fixed to the holder 302 by the cap 306, and the front end 3052 of the return spring 305 is The support 302 extends forward in the upper casing and contacts the inner surface of the upper casing. When the upper casing and the lower casing are relatively open, the inner surface of the upper casing presses the front end of the return spring 305 to elastically deform and is in the upper casing. A clamping force is generated between the lower casings to clamp the finger to be tested.

As shown in FIG. 3 and FIG. 4, the support 302 located on the upper half 301 of the lower case has a spring hole 303 and a screw hole 304. As shown in FIG. 5, the return spring 305 is a torsion spring, and the insertion end 3051 is linear. The insertion end 3051 is inserted into the spring hole 303, and the cap 306 is fixed on the holder 302 by a screw 307. The cap 306 seals the spring hole 303. Therefore, the return spring 305 is fixed on the holder 302, as shown in FIG. As shown, the spring hole 303 of the holder 302 has a spring groove 308 in front of it, and the return spring 305 is fixedly directed forward, so that the return spring 305 does not move on the holder 302. When the support 302 and the return spring 305 of this structure are used for mounting, the support 302 located in the upper half 301 of the lower case can be first inserted into the lower half 309 of the upper case, and the insertion end 3051 of the return spring 305 can be inserted. Inserted into the spring hole 303 of the holder 302, after the cap 306 is closed, it is fixed by screws 307. This method is very convenient and stable to install without damaging the return spring 305.

Since the cap 306 is slightly larger than the abutment opening 310 of the lower half 309 of the upper case, after the cap 306 is added, the abutment 302 can no longer be withdrawn from the abutment opening 310 of the lower half 309 of the upper case, thus, If there is an external force to pull open the upper and lower casings, the return spring 305 will no longer be pulled out of the upper casing and damaged.

8 to FIG. 12, FIG. 8 is a partial exploded view of a second preferred embodiment of the finger-clip oximeter of the present invention, and FIG. 9 is a cross-sectional view of the upper half of the lower case of the second preferred embodiment. Figure 10 is a schematic view of the return spring of the second preferred embodiment, Figure 11 is a plan view of the upper half of the lower case of the second preferred embodiment, and Figure 12 is a partial cross-sectional view of the second preferred embodiment. In order to facilitate the observation of the internal structure, the upper half of the upper case of the upper case and the lower half of the lower case of the lower case are omitted in comparison with Figs. 2, 8 and 12.

As shown in FIG. 12, the holder 402 located on the upper half 401 of the lower case has a U-shaped spring hole 403 and a screw hole 404 into which the U-shaped insertion end 4051 of the return spring 405 is inserted. The screw 407 and the cap 406 fix the return spring 405 to the support 402. The spring hole 403 of the holder 402 has a spring groove 408 in front of it, and the return spring 405 is fixedly directed forward, so that the return spring 405 does not move on the holder 402. The front end 4052 of the return spring 405 is supported in front of the lower half 409 of the upper case, and the rear end 4053 is supported behind the lower half 409 of the upper case. Therefore, when the upper and lower casings are inserted by the fingers, the upper casing will be subjected to two forces, and the force of the front end 4052 causes the upper casing to press the fingers, keeping the fingers in contact with the upper casing. The force of the rear end 4053 causes the upper casing to open, causing the upper and lower casings to be relatively open, which is equivalent to canceling the force of the front end portion 4052, and thus, compared with the structure of the first preferred embodiment This structure makes the force of the return spring 405 more gentle, overcoming the disadvantage that the spring force is greater when the upper casing is opened larger in the structure of the first preferred embodiment. At the same time, since the upper end of the screw 407 of the fixed return spring 405 is large, and the support of the front end 4052 and the rear end 4053 of the return spring 405 can also prevent the holder 402 from being pulled out from the upper casing, the return spring can also be prevented. The 405 is pulled out of the upper casing by an external force.

When the support 402 and the return spring 405 of this structure are used for mounting, the support 402 on the lower casing can be inserted into the upper casing, and the return spring 405 can be inserted into the spring hole 403 of the support 402. Inside, the cap 406 is fixed by screws 407. This method is very convenient and stable when installed, and does not damage the return spring 405.

Those skilled in the art will appreciate that the cap 306 of the first preferred embodiment and the cap 406 of the second preferred embodiment are not essential and may be replaced by similarly functional parts. It can also be replaced by a screw washer, or the cap can be fixed directly by screws with the screw cap size removed.

Referring to Figures 13 and 14, Figure 13 is an exploded view of a third preferred embodiment of the finger-clip oximeter of the present invention, and Figure 14 is an assembled view thereof. The finger-clip oximeter comprises an upper casing upper half 502 and an upper casing lower half 508, the lower casing upper half 511 and the lower casing lower half 515 forming a lower casing, an upper casing and A finger insertion hole is formed between the lower casings for insertion of the finger to be tested. A screen printing lens 501 is disposed on the surface of the upper casing, an LCD foam 503 and an LCD 504 are disposed under the screen printing lens 501, and an upper casing PCBA506 fixed by a screw 505 is disposed in the upper casing, and a return spring 507 is further disposed in the upper casing, and a return spring 507 is further disposed. It is a torsion spring and has a coil spring portion for enhancing the elasticity, and a lower seat 511 of the lower casing is provided with a seat 524 for mounting the return spring 507. When the installation is performed, the support 524 located on the upper half 511 of the lower casing may be inserted into the upper casing through the seat opening 525, and the return spring 507 is inserted into the spring hole of the support 524, and then the cap is used. The cover 520 secures the return spring 507 to the holder 524. An upper shell silica gel sheet 509 and a lower shell silica gel sheet 510 are placed in contact with the fingers between the upper and lower casings. The lower case is provided with a lower case PCBA512 fixed by a PA screw 523, and the circuits between the upper and lower cases are connected by the FPCB 519. Lower housing lower half 515, button spring 516, battery cover button 517, negative spring 513, button washer 514, battery cover 518, positive shrapnel 521, and PET film 522 constitute a battery compartment. The lower case half 515, the battery cover 518 and the self-recovering push-type battery cover button 517 constitute a battery compartment for accommodating the battery, and the battery cover button 517 is mounted on the lower side of the lower half 515 of the lower case, and the battery cover 518 is assembled The other side under the lower half of the lower case 515, the battery cover 518 is provided with a hook 5181 embedded in the inner wall of the lower half 515 of the lower case, and the other end of the battery cover 518 abuts against the battery cover button 517, when the battery cover 518 needs to be opened. First, the battery cover button 517 needs to be pressed first, and then the battery cover 518 is pushed to disengage the hook 5181 from the inner wall of the lower half 515 of the lower case, and then the battery cover 518 is removed to replace the battery, that is, the battery cover button 517 must be pressed. The battery will be detached, and the battery will not easily come out of the battery compartment, which increases the drop resistance of the finger-clip oximeter of the present invention. In addition, the PET film 522 can be placed around the battery to serve as a battery sheet, which can help the user to easily replace the battery. The button spring 516 is disposed around the lower portion of the battery cover button 517 to realize the automatic recovery characteristic of the battery cover button 517.

In the above, various other changes and modifications can be made in accordance with the technical solutions and technical concept of the present invention, and all such changes and modifications should be included in the appended claims. The scope of protection.

Claims

Rights request

1. A finger-clip type blood oxygen saturation meter, including: an upper housing, a lower housing and a return spring; one of the upper housing and the lower housing is provided with a raised support, and the other is provided with a Corresponding to the support opening of the support, the free end of the support is inserted into the corresponding housing through the support opening. The upper housing and the lower housing are assembled together. The free end of the support is provided with There is a spring hole. The insertion end of the return spring is inserted into the spring hole and the insertion end is fixed to the support by the cap. The front end of the return spring moves forward from the support in the corresponding housing. Extends and contacts the inner surface of the corresponding housing. When the upper housing and the lower housing are relatively opened, the inner surface of the corresponding housing presses the front end of the return spring to produce elastic deformation and causes elastic deformation in the upper housing. A clamping force is generated between the shell and the lower shell to clamp the finger under test.

2. The finger-clip type blood oxygen saturation meter according to claim 1, wherein a spring groove is provided in front of the spring hole of the support to fix and guide the return spring forward.

3. The finger-clip type blood oxygen saturation meter as claimed in claim 1, wherein the cap is slightly larger than the support opening.

4. The finger-clip type blood oxygen saturation meter as claimed in claim 1, wherein the support is provided with a screw hole, and the cap is fixed on the support through screws.

5. The finger-clip type blood oxygen saturation meter according to claim 1, wherein the insertion end of the return spring is linear.

6. The finger-clip type blood oxygen saturation meter according to claim 1, wherein the insertion end of the return spring is U-shaped, and the spring hole of the support is U-shaped.

7. The finger-clip type blood oxygen saturation meter according to claim 6, wherein the return spring includes a rear end extending rearwardly from the support in the corresponding housing and contacting the corresponding housing. The inner surface of the casing, when the front ends of the upper casing and the lower casing are relatively open, the rear end presses the inner surface of the corresponding casing so that the upper casing and the lower casing tend to be relatively open. .

8. The finger-clip type blood oxygen saturation meter as claimed in claim 1, wherein the return spring is a torsion spring.

9. A finger-clip type blood oxygen saturation meter, including: an upper shell assembled from the upper half of the upper shell and a lower half of the upper shell, a lower shell assembled from the upper half of the lower shell and the lower half of the lower shell. and a return spring; the upper half of the lower shell is provided with a raised support, and the lower half of the upper shell is provided with a support opening corresponding to the support, and the free end of the support passes through the support opening. Insert into the upper housing. The upper housing and the lower housing are assembled together. The free end of the support is provided with a spring hole. The insertion end of the return spring is inserted into the spring hole and the insertion end is secured by the cap. fixed to the support, the front of the return spring The end extends forward from the support in the upper shell and contacts the inner surface of the lower half of the upper shell. When the upper shell and the lower shell are relatively opened, the inner surface of the lower half of the upper shell presses the reset The front end of the spring produces elastic deformation to generate a clamping force between the upper housing and the lower housing to clamp the finger under test; the lower half of the lower housing is equipped with a battery cover and an automatic recovery push-type battery cover button. The battery cover button is assembled on one side under the lower half of the lower case, and the battery cover is assembled on the other side under the lower half of the lower case. When the battery cover is closed, one end of the battery cover is provided with There is a hook embedded in the inner wall of the lower half of the lower case, and the other end of the battery cover is against the battery cover button.

10. A return spring assembly for a finger-clip device. The finger-clip device has an upper housing and a lower housing that can open/close relatively. The return spring assembly includes: a return spring and a support. When using the return spring assembly, the support is protrudingly fixed to one of the upper housing and the lower housing, and the other of the upper housing and the lower housing is provided with a corresponding support. The support opening is inserted into the corresponding housing through the support opening through the free end of the support. The upper housing and the lower housing are assembled together. The free end of the support is provided with a spring hole, and the The insertion end of the return spring is inserted into the spring hole and the insertion end is fixed to the support by the cap. The front end of the return spring extends forward from the support in the corresponding housing and contacts the corresponding housing. The inner surface of the casing. When the upper casing and the lower casing are relatively opened, the inner surface of the corresponding casing presses the front end of the return spring to produce elastic deformation and the upper casing and the lower casing Clamping force is generated between the bodies.