JPH09122082A - Medical connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an electromagnetic noise from a conductive cylinder formed on the outer circumference part of a connector receptacle. SOLUTION: In a connector receptacle 15 which is attached to an end part of a signal transmission cable 6 to connect a connector 8 having signal lines 45 linked to respective contact pins 32 free to load or unload, contact pin holding members 31 and 31' having a contact pin 29 mounted thereon are held by a contact pin holding cylinder 23 made of metal. The contact pin holding cylinder 23 makes a continuity with upper and lower shield cases 26a and 26b in a continuity with 0V potential of a patient circuit by a continuity spring 28. A spring 39 for conduction is fitted on the inner circumferential surface of a connector fixed cylinder 35 as conductive cylinder body which is arranged on the outer circumference side of the contact pin holding cylinder 23 and provided with a cam pin 41 to fix the connector 8. A conduction mechanism is installed and works to bring the connector fixed cylinder 35 in a continuity with the 0V potential of the patient circuit through a guide cylinder 37 or the like on the side of the connector 8 when the connector 8 is mounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical connector having a connector of a cable connected to a medical electric instrument such as a medical endoscope, and a connector receiver of the drive unit to which the connector is detachably connected. Regarding the device.

[0002]

2. Description of the Related Art As prior art 1, a signal transmission cable connector receiver of a signal processing device is fixed to a chassis chassis through an insulating material so as to form a patient circuit, and a signal transmission cable connector is provided on an outer peripheral portion of the connector receiver. And a signal transmission cable fixing cylinder (or a connector fixing cylinder) provided with a cam pin for a cam groove locking structure for securely and easily fixing.

This connector fixing tube is electrically insulated from the ground primary circuit and secondary circuit in order to maintain the withstand voltage when the connector of the signal transmission cable is mounted, and also covers the connector receiver for the signal transmission cable. In order to prevent the signal transmission cable connector receiver connected to the patient circuit from being easily touched when the signal processing device connector is not attached to the signal processing device, the electrical connection from the patient circuit is also possible. Insulated.

Japanese Patent Application No. 60-11370 as prior art 2
As shown in No. 3, in order to shield the electromagnetic wave noise radiated from the electronic circuit board to which the communication cable is connected, it is shielded by a shield case provided with a concave opening for passing the communication cable.

As another conventional technique, Japanese Patent Application No. 60-
As shown in 147185, in order to shield the electromagnetic wave noise radiated from the electronic circuit board to which the communication cable is connected, an opening for passing the communication cable and a conductive elastic member for closing the opening are provided. It was shielded with a case.

As another conventional technique, a communication cable connected to an electronic circuit board is covered with a conductive metal tube,
The conductive metal cylinder covering the communication cable and the electronic circuit board are covered with a shield case made of a conductive metal plate so that the end of the conductive metal cylinder is projected to shield electromagnetic noise radiated from the electronic circuit board. Was there.

[0007]

In the case of the prior art 1, the connector fixing cylinder located on the outer peripheral portion of the connector receiver for the signal transmission cable is electrically connected to the ground, the primary circuit and the secondary circuit, and further to the patient circuit. Since the connector of the signal transmission cable is attached because it is insulated, and the signal flows between the signal processing device and the signal transmission cable of the endoscope side, the connector fixing tube becomes electrically unstable and the connector fixing tube There was a possibility that the electromagnetic noise conducted to the radiated from the connector fixed cylinder.

The problem of Japanese Patent Application No. 60-113703 of the prior art 2 is that electromagnetic wave noise from the electronic circuit board is easily radiated from the concave opening through which the communication cable of the shield case passes, and electromagnetic waves from the electronic circuit board. Noise was conducted to the communication cable, and electromagnetic wave noise was easily radiated from the communication cable.

The problem of Japanese Patent Application No. 60-147185 of the prior art 2 is that the opening for passing the communication cable is closed by the conductive elastic member, but the electromagnetic noise from the electronic circuit board affects the communication cable. Electromagnetic noise is more likely to be radiated than a communication cable due to conduction.
Is the same as

A problem with the prior art 2 and other prior arts is that the electronic circuit board and the conductive metal cylinder are integrally covered with a shield case made of a conductive metal plate so that the end of the conductive metal cylinder is projected. However, since a space is created in the openings of the conductive metal cylinder and the conductive metal cylinder of the shield case, electromagnetic noise from the electronic circuit board may be radiated from the space.

The present invention has been made in view of the above points, and a first object of the present invention is that electromagnetic wave noise is radiated from a connector fixing cylinder or a conductive cylinder arranged on an outer peripheral portion of a connector receiver. It is to provide a medical connector device capable of preventing the above.

A second object of the present invention is to provide a medical connector device capable of preventing the electromagnetic wave noise from being radiated from the gap between the conductive case member covering the communication cable and the shield case.

[0013]

SUMMARY OF THE INVENTION According to the present invention, when the connector is not attached to the outer periphery of the connector receiver which constitutes the patient circuit of the drive device, the ground, the primary circuit, the secondary circuit and the patient circuit are electrically connected. There is provided a conducting means for conducting the insulated conductive tube having a function as a connector fixing cylinder to the GND (ground) of the patient circuit and holding it at the GND potential only when the connector is mounted.

With this structure, the connector fixing tube is electrically connected to the GND of the patient circuit while the connector of the signal transmission cable is attached to the connector receiver of the driving device, and the GND is held at the GND potential to be an electrically stable potential state. The electromagnetic noise conducted to the connector fixing cylinder is not radiated from the connector fixing cylinder.

Further, a conductive tube member covering a cable connecting the circuit board and the connector receiver is integrally covered with a conductive plate forming a shield case so that an end of the conductive tube member projects. By covering the space between the conductive tubular member that covers the cable and the shield case with the conductive member, the gap between the conductive tubular member and the shield case is eliminated, and electromagnetic radiation from the gap is eliminated.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. (First Embodiment) FIGS. 1 to 3 relate to a first embodiment of the present invention, FIG. 1 is a schematic view of an endoscope system, and FIG. 2 is a first embodiment of the present invention. The connector provided at the end of the signal transmission cable that constitutes the connector device for an endoscope and the structure of the connector receiver of the signal processing device to which this connector is connected are shown in a longitudinal sectional view. FIG. The enlarged view of a part of the state which attached the connector is shown.

As shown in FIG. 1, an endoscope system 1 as a medical device includes an electronic endoscope 2 having an image pickup means, a light source device 3 for supplying illumination light to the electronic endoscope 2, and an image pickup device. A signal processing device (or a video signal processing device) 4 for performing signal processing on the means to generate a video signal, a monitor 5 connected to the signal processing device 4 for displaying a video, an electronic endoscope 2 and a light source device. 3 and a signal transmission cable 6 for transmitting a signal from the signal processing device 4 to the signal processing device 4.

The signal transmission cable 6 is provided with an endoscope connecting connector 7 for connecting with the electronic endoscope 2 and a signal processing device connecting connector 8 for connecting with the signal processing device 4 at both ends. It has a structure.

The electronic endoscope 2 is extended from the side portion of the operation portion 10 and the operation portion 1 provided at the rear end of the insertion portion 9 which is elongated for insertion into the living body. And the universal cord 11
Has a general connector 12 at its end, and the light guide connector 13 provided at the front end of the general connector 12
Is detachably connected to the light guide connector receiving portion of the light source device 3. Further, the endoscope connector 7 is detachably connected to the connector receiver 14 on the side of the general connector 12.

By connecting the light guide connector 13 to the light source device 3, the illumination light of a lamp (not shown) in the light source device 3 is supplied to the end surface of the light guide connector 13, and the universal cord 11, the operating portion 10 and the insertion portion are supplied. 9
Illumination light is transmitted by the light guide inserted inside,
Illumination light transmitted from the distal end surface attached to the illumination window at the distal end of the insertion portion 9 is emitted, and illuminates the object side such as the affected area in the body cavity.

An observation window is provided adjacent to the illumination window, and the objective lens attached to the observation window forms an optical image of the object on its focal plane. A solid-state imaging device such as a CCD is arranged on the focal plane, and photoelectrically converts an optical image. This solid-state image pickup device is connected to the connector receiver 14 of the general connector 12 via a signal transmission cable inserted through the insertion portion 9 or the like.

Therefore, the connector 7 for connecting the endoscope is connected to the connector receiver 14, and the connector 8 for connecting the signal processing device is further connected to the connector receiver 15 of the signal processing device 4. A drive signal is applied to the solid-state image sensor from a solid-state image sensor drive circuit (not shown), the photoelectrically converted signal is read out and input to the video signal processing circuit in the signal processing device 4, and a standard video signal is generated. This video signal is input to the color monitor 5 and an image of the object is displayed on the display surface of the color monitor 5.

The signal processing device 4 includes a primary circuit connected to a commercial power source (not shown), a secondary circuit electrically insulated from the primary circuit by an insulating transformer, and the secondary circuit and isolation means. The patient circuit is isolated by the image pickup means of the electronic endoscope 2 is connected to the patient circuit. Therefore, the electric system in the present embodiment is configured to ensure safety even when the electronic endoscope 2 is used as a medical endoscope.

In the signal processing device 4, the housing chassis 21 which is electrically connected to the ground (hereinafter abbreviated as GND) of the primary circuit or the secondary circuit is provided with a connector base 22 formed of an insulating member which constitutes the connector receiver 15. A contact pin holding cylinder 23 made of metal and having a cylindrical shape is attached via the above. The contact pin holding cylinder 23 holds a plurality of contact pins 29, 29, ... Of the connector receiver 15 attached to the opening end on the side where the connector 8 is mounted via an insulating member. Also, contact pin 2
.. and the circuit board 25. The conductive tube member also has a function of shielding the plurality of signal lines 33, 33, ..

A circuit board 25 constituting a patient circuit is attached to the chassis chassis 21 via an insulating member. The circuit board 25 is covered with an upper shield case 26a and a lower shield case 26a from above and below as a metal patient circuit shield case insulated from the housing chassis 21, and the openings of the upper shield case 26a and the lower shield case 26a are opened. One end of the contact pin holding cylinder 23 is inserted into the contact pin holding cylinder 23, and is fixed by a screw around an opening of a conductive plate member (specifically, a metal plate member) 27 erected on the circuit board 25. . The upper shield case 26a, the lower shield case 26a, and the plate member 27 are the GN of the circuit board 25.
D is connected.

Around the openings of the shield cases 26a and 26b, a conductive elastic member, specifically, a metal conductive spring 28 made of phosphor bronze or the like is provided, and the outer peripheral surface of the contact pin holding cylinder 23 is provided. The shield pins 26a, 26b and the contact pin holding cylinder 23 are electrically connected to each other. That is, the contact pin holding cylinder 23 is attached to the shield case 26.
(That is, 0 potential or GND potential of the patient circuit) (the shield case 26 of a more preferable specific example)
(See FIGS. 7 and 8 for the structures of a and 26b and the conduction spring 28).

Two discs made of an insulating member are mounted inside the open end of the contact pin holding cylinder 23 so that a plurality of contact pins 29, 29 ,. The shaped contact pin holding member 31 and the contact pin holding member 31 'are fixed with screws.

Each contact pin 29 is made of metal and is provided with a concentric recess on the tip end side of a thin columnar shape so that the contact pin 32 on the connector 8 side can be inserted therein. A connection lead is formed to be connected to one end of 33, and each signal line 33 connected to each connection lead passes through the inside of the contact pin holding cylinder 23 and passes through an edge connector 34 provided on the circuit board 25 to an electronic circuit of the circuit board 25. Connected with.

On the outside of the contact pin holding cylinder 23, a metal connector fixing cylinder 3 is concentric with the contact pin holding cylinder 23 (for fixing the connector 8 mounted on the connector receiver 15).
5 is provided, and the base end (rear end) of the connector fixing cylinder 35 is fixed to the insulating connector base 22. Therefore, the connector fixing tube 35 is usually insulated from the ground, the primary circuit and the secondary circuit as well as the patient circuit.

The connector fixing cylinder 35, which is a conductive cylinder disposed on the outer peripheral side of the connector receiver 15, is formed of a metal member into a substantially cylindrical shape, and the tip end of the cylindrical shape is in front of the front end surface of the contact pin 29. Normally, contact pin 2
9 parts are prevented from being accidentally conducted (the connector fixing tube 35 is a metal member, but normally, the ground, the primary circuit, the secondary circuit and the patient circuit are also insulated, No current will flow due to contact).

A ring-shaped recess 36 is formed between the connector fixing cylinder 35 and the contact pin holding cylinder 23, and is fixed to the guide cylinder 37 which serves as a guide when the connector 8 is mounted and the inside of the guide cylinder 37. The metal second contact pin holding cylinder 47 is inserted.

Further, cam pins 41 are projectingly provided at a plurality of positions on the outer peripheral surface of the connector fixing cylinder 35, and the cam pins 43 are formed in the cam grooves 43 formed on the deep side of the recess 42 for receiving the connector fixing cylinder 35 provided on the connector 8 side. By engaging 41, the connector 8 is locked (fixed) with respect to the connector receiver 15 so that the mounted state can be reliably held (see FIG. 3).

In the present embodiment, when the connector 8 is mounted on the connector receiver 15, the connector fixing cylinder 35 is electrically connected to the contact pin holding cylinder 23 as described below, so that the connector fixing cylinder 35 is mounted in the connector 8 mounting state. The conduction means or conduction mechanism for setting the GND of the patient circuit (that is, the potential of 0 V of the patient circuit) is formed.

As shown in FIG. 2, recesses such as circumferential grooves are provided in the outer peripheral surface of the contact pin holding cylinder 23 and the inner peripheral surface of the connector fixing cylinder 35, for example, at positions substantially opposite to each other. The base ends of the conductive springs 38, 39 made of metal such as phosphor bronze and having elasticity are fixed, and the other ends are bent so as to project to the recess 36 side.
The conduction springs 38 and 39 are provided on the entire outer circumference of the contact pin holding cylinder 23 and the inner circumference of the connector fixing cylinder 35.

Here, the conduction spring 38 is the contact pin holding cylinder 2
Although it protrudes sufficiently from the outer diameter of 3, the connector fixing tube 3
No contact with 5. On the other hand, the conduction spring 39 provided on the inner peripheral surface of the connector fixing 35 is sufficiently protruded from the inner diameter of the connector fixing cylinder 35, but is not in contact with the contact pin holding cylinder 23.

Therefore, when the guide tube 37 of the connector 8 is inserted into the recess 36 and the connector 8 is mounted on the connector receiver 15, as shown in FIG.
9 is the second contact pin holding cylinder 4 (inside the guide cylinder 37)
7 and the outer surface of the guide cylinder 37 so as to press the contact pin holding cylinder 23 and the second contact pin holding cylinder 4
7. The guide tube 37 and the connector fixing tube 35 are electrically connected to each other and have the same electric potential. That is, the connector fixing cylinder 35 is electrically connected to the contact pin holding cylinder 23 via the second contact pin holding cylinder 47 and the guide cylinder 37, and is electrically connected to the GND of the patient circuit.

On the other hand, in the connector 8, the signal transmission cable 6 is fixed by the cable fixing portion 44, and a plurality of signal lines 45 of the signal transmission cable 6 are passed through the first contact pin holding cylinder 46 made of metal to form the contact pin holding cylinder. Connected to a plurality of contact pins 32, 23, ... Attached to insulating contact pin holding members 48, 49 and the like fixed to the metal second contact pin holding cylinder 47 at the opening end of 46, respectively. ing.

A guide cylinder 37 is provided so as to be fitted on the outer peripheral surface of the second contact pin holding cylinder 47, and is fixed to the second contact pin holding cylinder 47 with a screw. The second contact pin holding cylinder 47 and the guide cylinder 37 are electrically connected. The tip end side of the second contact pin holding cylinder 47 is cut out in a slit shape, leaving a portion corresponding to the conduction spring 38 in the middle.

In the present embodiment, as described above, the metal conducting springs 3 are respectively provided on the outer peripheral surface of the contact pin holding cylinder 23 and the inner peripheral surface of the connector fixing cylinder 35 in the connector receiver 15.
8 and 39 are provided, and when the connector 8 is mounted, the conduction springs 38 and 39 are the second contact pin holding cylinders 47, respectively.
To the guide cylinder 37, and the connector fixing cylinder 35 provided outside the contact pin holding cylinder 23 through both the metal members, that is, the second contact pin holding cylinder 47 and the guide cylinder 37 is the contact pin holding cylinder 23. The feature is that it has a structure that conducts with.

Therefore, the connector 8 of the signal transmission cable 6
3 is mounted on the connector receiver 15 of the signal processing device 4, the state shown in FIG. 3 is obtained. In this state, the guide tube 37 is inserted into the space of the recess 36 on the outer circumference of the contact pin holding cylinder 23 and the inner circumference of the connector fixing cylinder 35. , The contact pin holding cylinder 23 and the guide cylinder 37 are electrically connected to each other through the conductive, more specifically, metal conduction spring 38, and the conductive, more specifically, metal, for conduction. The guide cylinder 37 and the connector fixing cylinder 35 are electrically connected via the spring 39, and as a result, the connector fixing cylinder 35 and the contact bin holding cylinder 23 become electrically the same potential, and the potential of the connector fixing cylinder 35 becomes electric. In this case, the stable state is achieved, and the electromagnetic wave noise can be prevented from being radiated.

(Second Embodiment) FIGS. 4 and 5 relate to a second embodiment of the present invention. FIG. 4 shows the structure of a connector device according to the second embodiment, and FIG. The schematic diagram which shows the detection operation of a part is shown.

In the first embodiment, the guide cylinder 37 is inserted into the space of the recess 36 formed by the outer circumference of the contact pin holding cylinder 23 and the inner circumference of the connector fixing cylinder 35, and a conductive conduction spring 38, In contrast to the structure in which the connector fixing cylinder 35 and the contact pin holding cylinder 23 are electrically at the same electric potential by the action of 39, in the present embodiment, one of the conduction springs 39 is not used, and the following configuration is adopted. ing.

As shown in FIG. 4, the connector fixing tube 35 'and the contact pin holding tube 23 are electrically connected in a parallel circuit via the electromagnetic switch 51 and the electromagnetic switch 51', and the connector 8 of the signal transmission cable 6 is attached. The different point is that the electromagnetic switch 51 and the electromagnetic switch 51 'are closed during the operation so that the connector fixing cylinder 35' and the contact pin holding cylinder 23 are electrically set to the same potential. Here, the electromagnetic switch 51,
The number of 51 'is two, but it may be one or more.

The connector fixing cylinder 35 'is an electromagnetic switch 51.
And one end of the electromagnetic switch 51 ',
The other ends of the electromagnetic switch 51 and the electromagnetic switch 51 'are connected to the contact pin holding cylinder 23'.

The connector 8 is attached / detached near the connector fixing tube 35 ', and the attachment / detachment detection pin 5 provided on the connector 8 side.
4 is provided with a connector attachment / detachment detection unit 52, and the output end of the connector attachment / detachment detection unit 52 is connected to the CPU 53. The CPU 53 is connected to the electromagnetic switch 51 described above.
And an ON / OFF control end of the electromagnetic switch 51 '. As described above, the number of electromagnetic switches may be one or more than two in addition to two.

As shown in FIG. 5, the connector attachment / detachment detection section 52.
Is composed of a light emitting element 55 and a light receiving element 56. When the connector 8 is attached to the connector receiver 15, the attachment / detachment detection pin 54 made of a light shielding material is located between the light emitting element 55 and the light receiving element 56. ing.

The operation and effect of this embodiment are as follows. When the connector 8 is attached to the connector receiver 15, the attachment / detachment detection pin 54 blocks the light from the light emitting element 55 to the light receiving element 56, detects that the connector 8 is attached, and the connector attachment / detachment detecting portion 52 outputs from the output end. Wear detection signal to CPU
Then, the CPU 53 closes the electromagnetic switch 51 and the electromagnetic switch 51 'to turn them on. Conversely, connector 8
When the operation of releasing the mounting is performed, light is sent from the light emitting element 55 to the light receiving element 56, it is detected that the connector 8 is detached from the connector receiver 15, and an insertion / removal detection signal is sent to the CPU 53, and the CPU 53 causes the electromagnetic switch. 51 and the electromagnetic switch 51 'are opened and turned off.

With the above operation, the connector fixing cylinder 35 'and the contact pin holding cylinder 23 are insulated when the connector 8 is not mounted, and the connector fixing cylinder 35' and the contact pin holding cylinder are held when the connector 8 is mounted. The cylinder 23 is electrically set to the same potential (specifically, the GND of the patient circuit), the connector fixing cylinder 35 'is brought into an electrically stable state, and electromagnetic wave noise is not radiated.

(Third Embodiment) FIGS. 6 to 8 relate to a third embodiment of the present invention, and FIG. 6 shows a structure of a part of a connector receiver of a signal processing device and a shield case of a circuit board. 7 shows a front view of the shield case as seen from the connector receiving side, and FIG. 8 shows a structure of the shield case in a perspective view.

The connector receiver 15 in this embodiment is the same as the connector receiver 15 described in the first embodiment, and each communication contact pin receiver 29 is connected to the circuit board 25 by a signal line 33. The contact pin receiver 29 and the signal line 33 are covered with the conductive (more specifically, a metal member) contact pin holding cylinder 23 as described in the first embodiment. The holding cylinder 23 extends above the circuit board 25.

The circuit board 25 is sandwiched from above and below, and the end of the contact pin holding cylinder 23 is inserted into the inside, and is electrically conductive (specifically, aluminum,
A metal plate such as a copper plate is formed into a box shape, and the entrance of the contact pin holding cylinder 23 is opened in a substantially U shape on the lower end side and is opened in a substantially U shape on the upper end side. The lower shield case 26b is fixed to the circuit board 25,
The circuit board 25 is fixed to the chassis chassis 21 via an insulating member (not shown).

The U-shaped openings of the upper shield case 26a and the lower shield case 26b are electrically conductive so as to surround the openings and have a substantially L-shaped cross section whose tip is open from the bent portion. A plurality of shield springs 28, 28 made of a spring material such as phosphor bronze maintain conductivity with the upper shield case 26a and the lower shield case 26b, and are screwed or welded to the upper shield case 26a and the lower shield case 26b. .

Here, the diameter of the substantially circular shape formed by the loci of the tips of the plurality of shield springs 28, 28, ... Fixed to the upper shield case 26a and the lower shield case 26b is outside the contact pin holding cylinder 23. Since the diameter is smaller than the diameter, each shield spring 28 presses the outer peripheral surface of the contact pin holding cylinder 23 so as to make a contact with the outer peripheral surface of the contact pin holding cylinder 23 so as to surely maintain the conductive state.

The other structure is the same as that of the first embodiment. The operation and effect of this embodiment are as follows. Since the diameter of the substantially circular shape formed by the locus of the tip of the shield spring 23 is smaller than the outer diameter of the contact pin holding cylinder 23, the shield spring 23 and the contact pin holding cylinder 23 are in pressure contact with each other to ensure electrical conduction. And lower shield case 22
Also, by covering the circuit board 16 with the upper shield case 21, electromagnetic wave noise generated from the circuit board 16 is not radiated from the gaps between the opening portions of the lower shield case 22 and the upper shield case 21 and the contact pin holding cylinder 23. It does not adversely affect other circuit boards of the body and other devices outside the housing.

Therefore, the circuit board 25 and the connector receiver 15
From a shield case that integrally covers the contact pin holding cylinder 23 as a conductive metal cylinder member that covers the cable (specifically, the signal line 33) that connects with (the contact pin 29 of) and the circuit board 25. A shield structure that does not radiate electromagnetic noise can be provided. The other effects are the same as those of the first embodiment.

(Fourth Embodiment) FIG. 9 shows a part of the connector receiver in the fourth embodiment. While the gap between the opening of the upper shield case 26a and the lower shield case 26b and the contact pin holding cylinder 23 is closed by the shield spring 28 in the third embodiment, the contact pin holding cylinder 23 is closed in the present embodiment. The difference is that a screw portion 23a is provided on the outer peripheral portion, and the upper shield case 26a and the lower shield case 26b are integrally sandwiched by the contact pin holding cylinder 23 ″ by using the screw portion 23a to close the gap.

Shield case 2 of contact pin holding cylinder 23 "
A plate member 2 made of a conductive metal on the end surfaces of 6a and 26b.
7 is fixed with a screw, and is a fixed cylinder 61 made of, for example, a conductive metal member that is slightly longer than the distance from the plate member 27 to the upper shield case 26a and the lower shield case 26b.
Is located on the outer periphery of the contact pin holding cylinder 23 ″ in a form of being sandwiched between the plate member 27, the upper shield case 26a, and the lower shield case 26b. The opening of the upper shield case 26a of the contact pin holding cylinder 23 ″ and the lower shield case The screw part 23a is provided outside the opening of the 26b.
Includes an upper shield case 26a and a lower shield case 26b.
Which is made of a conductive material such as circumscribing the outer peripheral surface of the upper shield case 26a and the lower shield case 26b of which outer diameters are provided with screws having a screw diameter and a pitch engaging with the screw portion 23a on the inner peripheral surface. The sandwiching ring 62 having a sufficiently larger size is used for fastening.

The operation and effect of this embodiment are as follows. The upper shield case 26a and the lower shield case 26b are integrally sandwiched between the contact pin holding cylinder 23 ″ by the fixed cylinder 61 and the sandwiching ring 62, and the openings of the upper shield case 26a and the lower shield case 26b are sandwiched. Electromagnetic noise generated from the circuit board 25 by being blocked by the ring 62 and covering the circuit board 25 with the lower shield case 26b and the upper shield case 26a holds the openings and contact pin of the lower shield case 26b and the upper shield case 26a. There is no radiation from the gap between the cylinders 23 ″, and it is possible to prevent adverse effects on other circuit boards inside the housing and other devices outside the housing.

In each of the above-described embodiments, the metal member may be at least a member having conductivity. For example, the contact pin holding member 23 may be formed by coating the surface of an insulating member with a conductive member. Alternatively, a metal foil may be attached.

The connector 8 is provided on the signal transmission cable 6 which is attachable to and detachable from the electronic endoscope 2, but the signal transmission cable 6 is provided integrally with the electronic endoscope 2 and the signal transmission cable 6 is provided. The connector 8 may be provided in the.

It should be noted that an embodiment constructed by partially combining the above-described embodiments also belongs to the present invention. In each of the above-described embodiments, the connector device used in the medical endoscope system has been described as a specific example of the medical electric device or the medical electric device, but the present invention is a medical electric device medical device. It can also be applied as a connector device.

For example, instead of the connector 8 of the signal transmission cable 6 provided integrally with the electronic endoscope 2, a connector provided at the end of a medical electric instrument (for example, an electric scalpel) used for a living body, and a signal processing A drive device or a control device having a primary circuit, a secondary circuit and a patient circuit for driving the medical electric instrument instead of the connector 15 of the device 4 (when the medical electric device is an electric scalpel, the electric scalpel is driven). Power supply device including a high frequency power supply), and the connector can be applied to a medical connector device including a detachable connector receiver. In this case, the connector receiver has the same structure as that described in the above-described embodiment, such as being connected to the circuit board forming the patient circuit in the drive device by the connection cable (a plurality of signal lines 33 in the specific example). Have. Therefore, the description is omitted.

[Supplementary Notes] A medical connector having a connector provided on a cable connected to a medical electric instrument, and a connector receiver connected to a patient circuit of a drive device for driving the medical electric instrument and detachably connected to the connector. In the device, a conductive tube electrically insulated from a primary circuit, a secondary circuit and a patient circuit of the drive device is provided on an outer peripheral portion of the connector receiver, and the conductive tube is provided only when the connector is mounted. A medical connector device, characterized in that a conducting means is provided for conducting to the 0V potential of the patient circuit.

2. The inner circumference of the conductive cylinder and the inner circumference of the conductive cylinder are arranged on the outer circumference of the connection cable connected to the contact of the connector receiver and the circuit board that constitutes the patient circuit. A conductive elastic member is attached to each of the outer periphery of the conductive cylindrical member which is electrically connected to 0V potential,
The medical instrument according to appendix 1, wherein the conductive tubular body is electrically connected to the conductive tubular member through the conductive elastic member and the connector to have the same potential only when the connector is mounted. Connector device.

3. The conductive tube and the inner side of the conductive tube are arranged on the outer periphery of the connection cable connected to the contact of the connector receiver and the circuit board forming the patient circuit, and are electrically connected to the 0V potential of the patient circuit. When connecting two or more electromagnetic switches through one or more electromagnetic switches, the electrically conductive tubular members are connected in parallel between the conductive tubular body and the conductive tubular member, and 2. The attachment or detachment is detected and the one or more electromagnetic switches are closed only when the connector is attached, and the electrically conductive cylinder is electrically connected to the electrically conductive cylinder member to have the same electric potential. Medical connector device. 4. In an electronic device having a built-in electronic circuit board and a connector for communication with an external device, an electronic circuit board and a conductive tube member for covering a communication cable connected to the electronic circuit board are attached to an end portion of the conductive tube member. A shield structure characterized by being integrally covered with a conductive plate member of a shield case in a protruding form, and a space between a conductive tubular member covering a communication cable and the shield case being covered with a conductive member.

5. A plurality of conductive elastic members are integrally installed around the opening of the conductive tubular member that covers the communication cable of the shield case while maintaining electrical continuity in the shield case,
5. The shield structure according to appendix 4, wherein the other end of the conductive elastic member is brought into contact with the conductive tubular member that covers the communication cable, and the space between the conductive tubular member that covers the communication cable and the shield case is covered.

6. A threaded portion is provided on the outer periphery of the conductive tubular member that covers the communication cable, and a conductive ring member is attached to the outer peripheral threaded portion so that the periphery of the opening of the conductive tubular member that covers the communication cable of the shield case is pressed against the conductive tubular member. Screw it on,
5. The shield structure according to appendix 4, wherein a space between the conductive tubular member that covers the communication cable and the shield case is covered.

7. A connector used for a medical endoscope having an image pickup means, which is provided in a cable connected to the image pickup means, and a patient circuit of a signal processing device which performs signal processing for the image pickup means, is connected to and detached from the connector. In a connector device for an endoscope having a connector receiver freely connected, a conductive tube electrically insulated from a primary circuit, a secondary circuit and a patient circuit of the signal processing device on an outer peripheral portion of the connector receiver. An endoscope connector device, comprising: a body, and a conducting means for conducting the conductive cylinder to the GND of a patient circuit only when the connector is mounted.

[0069]

As described above, according to the present invention, the connector provided on the cable connected to the medical electric instrument is connected to the patient circuit of the drive device for driving the medical electric instrument, and In a medical connector device having a connector and a connector receiver detachably connected, a primary circuit of the drive device is provided on an outer peripheral portion of the connector receiver.
A conductive tube electrically isolated from the next circuit and the patient circuit is provided, and a conductive means for electrically connecting the conductive tube to the 0V potential of the patient circuit is provided only when the connector is mounted, so that the connector is driven. The conductive cylinder is electrically conductive with the OV potential of the patient circuit in an electrically stable state when mounted on the connector receptacle of the device, and electromagnetic radiation noise can be prevented or eliminated from the conductive cylinder.

Further, by projecting the end portion of the conductive tubular member for covering the cable connected to the circuit board and the connector receiver and integrally covering it with the shield case, the conductive tubular member for covering the cable and the shield case are provided. Radiation of electromagnetic noise can be eliminated from the gap between and.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an endoscope system.

FIG. 2 is a vertical cross-sectional view showing a structure of a connector provided at an end of a signal transmission cable that constitutes the first embodiment of the present invention and a connector receiver of a signal processing device to which the connector is connected.

FIG. 3 is an enlarged view of the connector device in which the connector is attached to the connector receiver.

FIG. 4 is a sectional view showing a structure of a connector device according to a second embodiment of the present invention.

FIG. 5 is a schematic explanatory diagram of a detection operation of a connector attachment / detachment detection unit.

FIG. 6 is a sectional view showing a structure of a connector receiver according to a third embodiment of the present invention.

FIG. 7 is a front view of the shield case seen from the connector receiving side.

FIG. 8 is a perspective view showing the structure of a shield case.

FIG. 9 is a diagram showing a structure of a part of a connector receiver according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope system 2 ... Electronic endoscope 3 ... Light source device 4 ... Signal processing device 6 ... Signal transmission cable 8 ... (For signal processing device connection) Connector 11 ... Universal cord 12 ... General connector 15 ... Connector receiving 21 ... Housing chassis 22 ... Connector base 23 ... Contact pin holding cylinder 25 ... Circuit board 26a, 26b ... Shield case 28 ... Conducting spring 29 ... Contact pin 31, 31 '... Contact pin holding member 32 ... Contact pin 33 ... Signal line 35 ... Connector fixing cylinder 8 ... Connector 37 ... Guide cylinder 38, 39 ... Conduction spring

Claims (1)

[Claims] 1. A connector provided on a cable connected to a medical electric instrument, and a connector receiver connected to a patient circuit of a drive device for driving the medical electric instrument and detachably connected to the connector. In a medical connector device having: a conductive tube electrically insulated from a primary circuit, a secondary circuit and a patient circuit of the drive device is provided on an outer peripheral portion of the connector receiver, and only when the connector is mounted. A medical connector device comprising a conducting means for conducting the conductive tube to 0V potential of a patient circuit.