التفاصيل البيبلوغرافية
| العنوان: |
Safety indwelling needle |
| Document Number: |
20050192536 |
| تاريخ النشر: |
September 1, 2005 |
| Appl. No: |
11/065579 |
| Application Filed: |
February 25, 2005 |
| مستخلص: |
There is provided a safety indwelling needle comprising an inner needle unit 1 having an inner needle 11, an inner needle hub 13 provided on a proximal end of the inner needle 11 and a needle protecting member disposed at a distal side of the inner needle hub 13, and an outer needle unit 2 having an outer needle 21, characterized in that the needle protecting member includes an extendable housing unit 31 and the housing unit 31 can partly store the inner needle 11 therein in a state where the housing unit 31 is extended. |
| Inventors: |
Takagi, Nobuo (Osaka-shi, JP); Tanimoto, Masahisa (Osaka-shi, JP) |
| Claim: |
1. A safety indwelling needle comprising: an inner needle unit which includes an inner needle, an inner needle hub provided on a proximal end of the inner needle, a needlepoint provided at a distal end of the inner needle and a needle protecting member disposed at a distal side of the inner needle hub; and an outer needle unit which includes an outer needle having a lumen and an outer needle hub provided on a proximal end of the outer needle, said safety indwelling needle being characterized in that the needle protecting member includes an extendable housing unit disposed between a distal end of the inner needle hub and a proximal end of the outer needle unit and being detachably connected to said outer needle unit, said inner needle extending through a distal end of said housing unit and through the lumen of the outer needle in a state in which the housing unit is not extended, and the needlepoint of the inner needle being stored in the needle protecting member in a state in which the inner needle is withdrawn from the lumen of the outer needle and the housing unit is extended. |
| Claim: |
2. The safety indwelling needle according to claim 1, wherein the outer needle unit further includes an outer needle connector provided at a proximal side of the outer needle hub, a tube for connecting the outer needle hub and the outer needle connector, and an outer needle cap provided on a proximal end of the outer needle connector. |
| Claim: |
3. The safety indwelling needle according to claim 1, characterized in that the extendable housing unit is comprised of a plurality of telescoped hollow housing members. |
| Claim: |
4. The safety indwelling needle according to claim 1, wherein the needle protecting member further includes a needle covering member which is connected to a distal end of the housing unit for storing the needlepoint of the inner needle in the state in which the housing unit is extended. |
| Claim: |
5. The safety indwelling needle according to claim 4, wherein the needle covering member has a cylindrical-shape having an inner diameter substantially the same as an outer diameter of the inner needle. |
| Claim: |
6. The safety indwelling needle according to claim 4, wherein the needle covering member is made of metal. |
| Claim: |
7. The safety indwelling needle according to claim 1, wherein a proximal end of the housing unit is connected to a distal end of the inner needle hub. |
| Claim: |
8. The safety indwelling needle according to claim 1, wherein the inner needle is formed with an irregular portion on a surface thereof, which irregular portion engages a proximal end of the housing unit and causes said housing unit to extend as said inner needle is withdrawn from the lumen of the outer needle and the needlepoint of the inner needle to be stored in the housing unit in the state in which the housing unit is extended. |
| Claim: |
9. The safety indwelling needle according to claim 8, wherein the housing unit is provided with a hooking member which can be engaged with said irregular portion on the surface of the inner needle. |
| Claim: |
10. The safety indwelling needle according to claim 8, wherein the irregular portion on the surface of the inner needle is positioned on a proximal side of the outer needle in a state before use where the inner needle extends through the lumen of the outer needle. |
| Claim: |
11. The safety indwelling needle according to claim 1, wherein the outer needle unit is provided with a projecting portion at a proximal end thereof, the housing unit is provided with a hook-shaped member and the housing unit is detachably connected to the outer needle unit by detachable engagement of the hook-shaped member with the projecting portion. |
| Current U.S. Class: |
604164/080 |
| رقم الانضمام: |
edspap.20050192536 |
| قاعدة البيانات: |
USPTO Patent Applications |