Method and apparatus for breaking up calculi in urinary intracavity by milling

• US 8,562,625 B2
• Filed: 09/29/2009
• Issued: 10/22/2013
• Est. Priority Date: 10/06/2008
• Status: Active Grant

• Current Assignee: Qiwu Dang
• Original Assignee: Qiwu Dang
• Inventors: Ding, Qiwu
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): DANG, ANH TIEU
• Application Number:
  US13/122,609
• Publication Number:
  US 20110251623A1
• Time in Patent Office: 1,484 Days
• Field of Search: 606/127, 606/128, 606/159, 606110-115
• US Class Current: 606/128
• CPC Class Codes: A61B 1/307 for the urinary organs, e.g. urethroscopes, cystoscopes
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 2017/22011 Combined types of vibration, e.g. ultrasonic and electrohydraulic

Abstract

The present invention discloses calculi breakup method and apparatus. The method comprises: inserting a combination of an endoscope with a driving assembly and a milling assembly, or a combination of an endoscope and a sleeve with a driving assembly and a milling assembly into the urinary intracavity; starting up a driving unit to drive the milling assembly so as to mill the calculi in the intracavity into powder; and, discharging the milled calculi powder out of the body. Compared to the other calculi breakup method, the calculi breakup apparatus according to the present invention has the advantages of high calculi breakup speed, high efficiency, no heat during the calculi breakup, no hurt to the urinary mucous membrane, painless, short time for the treatment, low calculi residual rate, simple operation, and easy maintenance.

Claims

1. A caculi breakup apparatus for breaking up calculi in urinary intracavity, the apparatus comprises:

an endoscope,

a driving assembly, and

a milling assembly configured to be inserted into the urinary intracavity so as to mill the calculi in the intracavity into powder, thereby discharging the milled calculi powder out of the body, wherein the calculi breakup apparatus further comprises attachments of the endoscope, an energy supply device and a control host, wherein;

the milling assembly is in cooperation with the endoscope with its attachments, one end of the milling assembly is connected to a driving unit mounted in the driving assembly, a sensitive switch or a pressure sensor is connected to the control host, said driving assembly comprises an endoscope bayonet, an outer support, a sliding bar, an inner support, a snap spring, an abutting bar, the sensitive switch or pressure sensor, an inner spring, and an inner spring biasing force adjuster, wherein the endoscope bayonet is mounted outside the outer support, the inner support and the outer support are cooperated with each other for mounting the snap spring, the abutting bar, the inner spring, the inner spring biasing force adjuster, the sensitive switch or pressure sensor, the driving unit and an outer spring, the inner spring and the inner spring biasing force adjuster are adapted for adjusting a thrust of the abutting bar; and

the outer spring is mounted between the outer support and the inner support.

2. The calculi breakup apparatus according to claim 1, characterized in that:

said milling assembly comprises a transmission shaft, a sleeve, a milling head mounted on an end of the transmission shaft, and a supporter, wherein the transmission shaft is installed in the sleeve, a bearing is mounted near to the milling head and is located at a position between the transmission shaft and the sleeve, a sleeve sheath is fastened outside the sleeve and connected with the driving assembly, the other end of the transmission shaft is connected to the driving unit by means of a key.

3. The calculi breakup apparatus according to claim 2, characterized in that:

said milling head is made of diamond, hard alloy, corundum, or ceramic material and has a plurality of shapes or has a bit structure.

4. The calculi breakup apparatus according to claim 1, characterized in that:

the apparatus further comprises a subsidiary Y-shaped sleeve inserted into the endoscope, the Y-shaped sleeve has a slant opening or a curved opening, the Y-shaped sleeve has a branch opening communicated with a negative pressure unit, wherein the milled calculi powder is discharged from the branch opening of the Y-shaped sleeve.

5. The calculi breakup apparatus according to claim 1, characterized in that:

said energy supply device is an electrical supply or air supply to provide a power source to the control host, and the driving unit is cooperated with the power source of the energy supply device, the driving unit is a motor when the energy supply device is the electrical supply, and the driving unit is an air-operated turbomachine driven by compressed air when the energy supply device is an air supply.

6. The calculi breakup apparatus according to claim 1, characterized in that:

said control host comprises a sensitive switch or pressure sensor signal receiving device, a single chip microcomputer or microcontroller unit or control device, an energy output system and a speed adjusting switch, wherein after the sensitive switch or pressure sensor mounted in the driving assembly is activated, a signal is transmitted to the receiving device and is processed by the single chip microcomputer or microcontroller unit or control device, and an electrical supply or air supply is outputted to the driving unit from the energy output system, so as to operate the milling head.

7. The calculi breakup apparatus according to claim 1, characterized in that:

a velocity of milling is 10000-500000 rpm when the driving unit is an air-operated turbomachine; and

the velocity of milling is 5000-300000 rpm when the driving unit is a brushless motor.