Portable endoscope

• US 6,855,109 B2
• Filed: 07/17/2002
• Issued: 02/15/2005
• Est. Priority Date: 07/18/2001
• Status: Active Grant

• Current Assignee: Hoya Corporation
• Original Assignee: Pentax Corporation (Hoya Corporation)
• Inventors: Usami, Junji, Sano, Hiroshi, Ito, Shunichi, Obata, Yoshihiro
• Primary Examiner(s): FLANAGAN, BEVERLY MEINDL
• Application Number:
  US10/196,153
• Publication Number:
  US 20030018238A1
• Time in Patent Office: 944 Days
• Field of Search: 600/156, 600/157, 600/158, 600/159, 600/101
• US Class Current: 600/158
• CPC Class Codes: A61B 1/12 with cooling or rinsing arrangements

Abstract

At the tip of an insert portion of an endoscope, LEDs are provided. An air and liquid supply unit is mounted on a handle portion of the endoscope. The air and liquid supply unit is provided with a tank, a pump, and a battery. Liquid, which is supplied to the tip, is stored in the tank. The battery supplies driving current to the pump and the LEDs. The pump takes in the surrounding air. In accordance with the manipulation of the buttons provided on a grip portion of the endoscope, the pump sends either the liquid or the air to the tip.

Claims

1. A portable endoscope comprising:

a semiconductor light-emitting element that is provided at a tip of an insert portion of a scope in order to illuminate the area to be observed; and

a supply unit that includes;

a pump which supplies gas and liquid to said tip;

a power supplying apparatus which supplies power to said semiconductor light-emitting element and said pump; and

a tank in which said liquid is stored;

wherein said supply unit is provided on a handle portion of said scope.

2. A portable endoscope according to claim 1, wherein said supply unit is fixed to said handle portion.

3. A portable endoscope according to claim 1, wherein said supply unit is attachably and detachably mounted on said handle portion.

4. A portable endoscope according to claim 1, wherein said supply unit is placed so as to extend in a direction which is perpendicular to the longitudinal direction of said handle portion.

5. A portable endoscope according to claim 3, wherein said supply unit includes a first mounting mechanism that is provided with a first connecting portion and a second connecting portion,

and said handle portion includes a second mounting mechanism that is provided with a third connecting portion which is connectable with said first connecting portion and a fourth connecting portion which is connectable with said second connecting portion,

wherein when said first and third connecting portions are connected, a gas supply path of said insert portion, which sends said gas to said tip, is connected with said pump, and a liquid supply path of said insert portion, which sends said liquid to said tip, is connected with said tank;

and

when said second and fourth connecting portions are connected, a driving electric current is supplied from said power supplying apparatus to said semiconductor light-emitting element.

6. A portable endoscope according to claim 5, wherein:

said first connecting portion is a first cylindrical member that is provided on a side surface of said supply unit, and

said first cylindrical member comprises an opening of a gas supply path, of said supply unit, which is connected with said pump, and an opening of a liquid supply path, of said supply unit, which is connected with said tank;

said second connecting portion is a second cylindrical member that is provided on said side surface, being close to said first cylindrical member, and

a first pair of contact pins, which are electrically connected with said power supplying apparatus, being bear on an end surface of said second cylindrical member;

said third connecting portion is a first receptive member, being shaped like a round bar, with which said first cylindrical member can be engaged,

one end of said gas supply path of said insert portion and one end of said liquid supply path of said insert portion are provided in said first receptive member; and

said fourth connecting portion is a second receptive member, being shaped like a round bar, with which said second cylindrical member can be engaged, and

a second pair of contact pins, which are connected with said semiconductor light-emitting element through lead wires, being provided in said second receptive member,

wherein when said first cylindrical member is engaged with said first receptive member, said gas supply path of said supply unit and said gas supply path of said insert portion are connected, and said liquid supply path of said supply unit and said liquid supply path of said insert portion are connected,

when said second cylindrical member is engaged with said second receptive member, said first pair of contact pins and said second pair of contact pins are in contact.

7. A portable endoscope according to claim 5, wherein said first mounting mechanism includes a first mount-supporting member, being generally ring-shaped, which is provided on said side surface of said supply unit so as to surround said first and second connecting portions,

said second mounting mechanism includes a second mount-supporting member, being generally ring-shaped, which is formed so as to surround said third and fourth connecting portions, and

said first and second mount-supporting members are arranged such that said first and third connecting portions are connected and said second and fourth connecting portions are connected, when said first and second mount-supporting members are engaged with each other.

8. A portable endoscope according to claim 1, wherein said power supplying apparatus is attachably and detachably mounted on a handle portion of said scope, and

said tank and said pump are symmetrically arranged along a longitudinal axis of said handle portion.

9. A portable endoscope according to claim 8, wherein said handle portion includes a grip portion that is gripped by an operator and a linking portion that links said grip portion and said insert portion,

wherein said tank and said pump are fixed in said linking portion, and said power supplying apparatus is mounted in said grip portion so as to extend in a direction perpendicular to said longitudinal axis of said handle portion.

10. A portable endoscope according to claim 3, wherein said supply unit includes a supply unit connector that has enclosed type valve mechanisms, and said handle portion includes a handle portion connector that has valve opening mechanisms.

11. A portable endoscope according to claim 10, wherein each of said enclosed type valve mechanisms include:

a valve body;

a holding member which holds said valve body, said holding member having an opening; and

an urging member which is provided in said holding member and urges said valve body such that said opening is closed.

12. A portable endoscope according to claim 11, wherein each of said valve opening mechanisms includes a projecting member which presses said valve body in a direction opposite to a direction of the urging force of said urging member, when said supply unit is attached to said handle portion.

13. A portable endoscope according to claim 12, wherein said scope includes a gas supply path for sending gas to said tip and a liquid supply path for sending liquid to said tip, and

when said supply unit is attached to said handle portion:

a fifth connecting portion, of said supply unit connector, which is linked to said pump, and a sixth connecting portion, of said handle portion connector, which is linked to said gas supply path are connected, so that said gas supply path is connected with said pump; and

a seventh connecting portion, of said supply unit connector, which is linked to said tank, and an eighth connecting portion, of said handle portion connector, which is linked to said liquid supply path are connected, so that said liquid supply path is connected with said tank,

said fifth and seventh connecting portions having said enclosed type valve mechanism,

said sixth and eighth connecting portions having said valve opening mechanism.

14. A portable endoscope according to claim 13, wherein said fifth and seventh connecting portions are nested.

15. A portable endoscope according to claim 14, wherein said valve body of said seventh connecting portion has cylindrical shape, and said fifth connecting portion is provided in said valve body of said seventh connecting portion.

16. A portable endoscope according to claim 13, wherein said supply unit connector includes a ninth connecting portion, of said enclosed type valve mechanism, which is linked to said pump, and said handle portion connector includes a tenth connecting portion, of said valve opening mechanism, which is linked to an inlet of said pump, and

when said supply unit is attached to said handle portion, said ninth and tenth connecting portions are connected, so that said pump is linked with said inlet.

17. A portable endoscope according to claim 16, wherein said fifth, seventh, and ninth connecting portions are nested.

18. A portable endoscope according to claim 17, wherein said valve body of said seventh connecting portion and said valve of said ninth connecting portion have a cylindrical shape, and said fifth connecting portion is provided in said valve body of said seventh connecting portion, and said seventh connecting portion is provided in said valve body of said ninth connecting portion.

19. A portable endoscope according to claim 3, wherein when said supply unit is detached from said handle portion, driving current supplied from said power supplying apparatus to said pump is stopped.

20. A portable endoscope according to claim 19, wherein when said supply unit is attached to said handle portion, a parallel circuit, in which said pump and said semiconductor light-emitting element are connected with said power supplying apparatus, is formed.

21. A portable endoscope according to claim 20, wherein said supply unit includes a first switch element which is closed when said supply unit is attached to said handle portion and is opened when said supply unit is detached from said handle portion, wherein

when said first switch element is closed, supplying driving current from said power supplying apparatus to said pump becomes possible, and

when said first switch element is opened, supplying driving current from said power supplying apparatus to said pump is stopped.

22. A portable endoscope according to claim 21, wherein said supply unit includes a second switch element which can be controlled by an operator, and supply of driving current from said power source supplying apparatus to said pump is controlled in accordance with the state of said second switch, and

when both said first and second switch elements are closed, supplying driving current from said power supplying apparatus to said pump is carried out.

23. A portable endoscope according to claim 21, wherein said supply unit includes a push button, and said handle portion includes a pushing member for pushing said push button,

wherein when said supply unit is attached to said handle portion, said push button is pushed by said pushing member, so that said first switch element is closed.

24. A portable endoscope according to claim 20, wherein said supply unit includes a third switch element which exists between said power supplying apparatus and said semiconductor light-emitting element in said parallel circuit.

25. A portable endoscope according to claim 19, wherein when said supply unit is attached to said handle portion, a series circuit, in which said power supplying apparatus, said pump, and said semiconductor light-emitting element are connected in series, is formed.

26. A portable endoscope according to claim 25, wherein said supply unit includes a third switch element which can be controlled by an operator, said third switch element existing in said series circuit, wherein

turning on/off of said semiconductor light-emitting element, and supplying driving current from said power supplying apparatus to said pump are controlled in accordance with the state of said third switch element.

27. A portable endoscope comprises:

means for illuminating the area in front of a tip of an insert portion of a scope, said illuminating means being provided at said tip; and

a supply unit that includes;

means for supplying gas and liquid to said tip;

means for supplying power to said illuminating means and said gas and liquid supplying means; and

means for storing said liquid;

wherein said supply unit is provided on a handle portion of said scope.