CN215996475U - Medical dressing agitating unit - Google Patents

Medical dressing agitating unit Download PDF

Info

Publication number
CN215996475U
CN215996475U CN202121830909.1U CN202121830909U CN215996475U CN 215996475 U CN215996475 U CN 215996475U CN 202121830909 U CN202121830909 U CN 202121830909U CN 215996475 U CN215996475 U CN 215996475U
Authority
CN
China
Prior art keywords
box
plate
heating
stirring
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202121830909.1U
Other languages
Chinese (zh)
Inventor
王金凤
刘洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Capitalbio Medlab Co ltd
Original Assignee
Shenyang Boo Medical Laboratory Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenyang Boo Medical Laboratory Ltd filed Critical Shenyang Boo Medical Laboratory Ltd
Priority to CN202121830909.1U priority Critical patent/CN215996475U/en
Application granted granted Critical
Publication of CN215996475U publication Critical patent/CN215996475U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Accessories For Mixers (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The utility model discloses a medical dressing stirring device which comprises a box body, a vibration mixing assembly and a stirring and medicine distributing assembly, wherein the vibration mixing assembly is arranged in the box body, the stirring and medicine distributing assembly is arranged at the lower part of the vibration mixing assembly, the stirring and medicine distributing assembly comprises a transverse plate, an upright post, a vibrating plate, a reset spring, a protecting body, a vibrating motor, a connecting pipe and a first electromagnetic valve, and the stirring and medicine distributing assembly comprises a propelling stirring box, a baffle plate, a driving motor, a rotating shaft, a rotating paddle, a scraping plate, a normal temperature box, a heating box, a conveying pipe, a second electromagnetic valve, a third electromagnetic valve, a heat conductor and a heating piece. The utility model belongs to the technical field of medical dressings, and particularly relates to a medical dressing stirring device which has the functions of vibrating and mixing, stirring and dispensing medicines, heating medicines, improving the mixing uniformity and having strong practicability.

Description

Medical dressing agitating unit
Technical Field
The utility model belongs to the technical field of medical dressings, and particularly relates to a medical dressing stirring device.
Background
The medical liquid dressing is used for treating the outer skin of people, and a filtering device is required to filter the liquid dressing in the production and processing process of the medical liquid dressing so as to improve the concentration of the liquid dressing. Liquid dressing need mix the stirring with liquid dressing according to the proportion in the process of production, manual stirring, and manual stirring inefficiency also can lead to the long-time tired work of personnel to there are volatility and toxicity in the liquid dressing, and personnel's ratio in-process contacts for a long time or splashes carelessly and can have health and psychological injury to the staff, at this moment need use a medical dressing agitating unit.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides the medical dressing stirring device which has the functions of vibrating and mixing, stirring and dispensing medicine, heating medicine, improving the mixing uniformity and having strong practicability.
The technical scheme adopted by the utility model is as follows: a medical dressing stirring device comprises a box body, a vibration mixing component and a stirring and medicine distributing component, wherein the vibration mixing component is arranged in the box body, the stirring and medicine distributing component is arranged at the lower part of the vibration mixing component, the stirring and medicine distributing component comprises a transverse plate, an upright post, a vibrating plate, a reset spring, a protective body, a vibrating motor, a connecting pipe and a first electromagnetic valve, the transverse plate is arranged between the inner side walls of the box body, the middle position of the transverse plate is in a net-shaped hollowed-out arrangement, the transverse plate is in an inclined arrangement, the upright post is arranged between the transverse plate and the inner top wall of the box body, the upright post is oppositely arranged, the vibrating plate penetrates through the upright post and is slidably arranged at the middle position of the upright post, the middle position of the vibrating plate is in a net-shaped hollowed-out arrangement, one end of the reset spring is arranged on the outer side wall of the vibrating plate, the other end of the reset spring is arranged on the outer side wall of the upright post, and the protective body is arranged on the upper part of the vibrating plate, the vibration motor is arranged inside the protection body, one end of the connecting pipe is connected with the middle mesh-shaped hollow position of the transverse plate, and the first electromagnetic valve is arranged in the middle of the connecting pipe.
Further, the stirring and medicine distributing assembly comprises a propelling stirring box, a partition plate, a driving motor, a rotating shaft, a rotating paddle, a scraping plate, a normal temperature box, a heating box, a conveying pipe, a second electromagnetic valve, a third electromagnetic valve, a heat conductor and a heating plate, wherein the propelling stirring box is arranged in the middle of the inner side wall of the box body and is communicated with the other end of the connecting pipe, the propelling stirring box is arranged in a barrel shape, the partition plate is arranged between the inner side walls of the propelling stirring box, the driving motor is arranged on the partition plate, one end of the rotating shaft is arranged at the output end of the driving motor, the other end of the rotating shaft penetrates through the partition plate and is arranged in the propelling stirring box, the rotating paddle is arranged on the rotating shaft, the scraping plate is arranged on the rotating shaft, the normal temperature box is arranged at the inner bottom wall of the box, the heating box is arranged at the inner bottom wall of the box, the normal temperature box and the heating box are arranged oppositely, one end of the conveying pipe penetrates through the propelling stirring box and is arranged in the propelling stirring box, conveyer pipe intermediate position is equipped with the tee bend, the conveyer pipe is linked together in normal atmospheric temperature case and heating cabinet respectively in the other both ends of conveyer pipe, conveyer pipe intermediate position is located to the second solenoid valve, conveyer pipe intermediate position is located to the third solenoid valve, the heating cabinet internal bottom wall is located to the heat conductor, the heating plate is located inside the heat conductor, and the baffle can be separated with impeling the agitator tank, and the messenger can protect driving motor, and driving motor, axis of rotation can drive rotatory oar and impel the medicine and stir simultaneously, and the scraper blade can strike off impel the remaining medicine of agitator tank lateral wall, and the conveyer pipe can be carried the medicine as required in normal atmospheric temperature case or the heating cabinet, and heating plate and heat conductor can carry out the thermal treatment to the medicine in the heating cabinet.
Furthermore, a feeding port is formed in the top of the box body, so that medical liquid dressings needing to be mixed can be conveniently fed.
Furthermore, the bottom of the box body is provided with supporting legs, the supporting legs are arranged in a pairwise symmetrical mode, and the supporting device is convenient to integrate.
Further, box upper portion is equipped with vibration switch, box upper portion is equipped with control switch, box upper portion is equipped with drive switch, box upper portion is equipped with shunt switch, box upper portion is equipped with branch medicine switch, box upper portion is equipped with the heating switch, vibration switch is connected with the vibrating motor electricity, control switch is connected with first solenoid valve electricity, drive switch is connected with the driving motor electricity, shunt switch is connected with the second solenoid valve electricity, divide medicine switch and third solenoid valve electricity to be connected, the heating switch is connected with the heating plate electricity.
Further, the outside of the reset spring is provided with a protective layer, so that the reset spring is prevented from influencing the medical dressing.
After adopting the structure, the utility model has the following beneficial effects: the utility model relates to a medical dressing stirring device, a vibrating motor on a transverse plate can make the vibrating plate vibrate up and down to vibrate and mix liquid dressing, a reset spring can increase the vibration effect and improve the mixing efficiency, the transverse plate is obliquely arranged so that the liquid dressing can flow into a connecting pipe through the middle position of the transverse plate, the connecting pipe connects the transverse plate and a pushing stirring box, the liquid dressing after vibrating and mixing can conveniently flow into the pushing stirring box, a partition plate can separate the pushing stirring box so as to protect a driving motor, the driving motor and a rotating shaft can drive a rotating paddle to push and stir the medicine simultaneously, a scraper can scrape the medicine remained on the side wall of the pushing stirring box, a conveying pipe can convey the liquid dressing to a normal temperature box or a heating box according to the needs, and a heating piece and a heat conductor can heat the liquid dressing in the heating box, the pan feeding mouth at box top conveniently drops into the liquid dressing that needs the mixture, and the bottom half is the supporting legs that two bisymmetry set up, makes things convenient for strutting arrangement wholly, and the protective layer in the reset spring outside can prevent that reset spring from influencing the medicine.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.
Fig. 1 is a schematic structural diagram of an overall medical dressing stirring device.
In the drawings: 1. the box, 2, the vibration mixes the subassembly, 3, the stirring divides the medicine subassembly, 4, the diaphragm, 5, the stand, 6, the vibration board, 7, reset spring, 8, the protection body, 9, vibrating motor, 10, the connecting pipe, 11, first solenoid valve, 12, impel the agitator tank, 13, the baffle, 14, driving motor, 15, the axis of rotation, 16, rotatory oar, 17, the scraper blade, 18, the constant temperature case, 19, the heating cabinet, 20, the conveyer pipe, 21, the second solenoid valve, 22, the third solenoid valve, 23, the heating plate, 24, the heat conductor, 25, pan feeding mouth, 26, the supporting legs, 27, vibrating switch, 28, control switch, 29, driving switch, 30, reposition of redundant personnel switch, 31, divide medicine switch, 32, protective layer, 33, heating switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in figure 1, a medical dressing stirring device comprises a box body 1, a vibration mixing component 2 and a stirring and medicine distributing component 3, wherein the vibration mixing component 2 is arranged inside the box body 1, the stirring and medicine distributing component 3 is arranged at the lower part of the vibration mixing component 2, the stirring and medicine distributing component 3 comprises a transverse plate 4, an upright post 5, a vibrating plate 6, a reset spring 7, a protective body 8, a vibrating motor 9, a connecting pipe 10 and a first electromagnetic valve 11, the transverse plate 4 is arranged between the inner side walls of the box body 1, the middle position of the transverse plate 4 is in a net-shaped hollow arrangement, the transverse plate 4 is in an inclined arrangement, the upright post 5 is arranged between the transverse plate 4 and the inner top wall of the box body 1, the upright post 5 is in a relative arrangement, the vibrating plate 6 penetrates through the upright post 5 to be slidably arranged at the middle position of the upright post 5, the middle position of the vibrating plate 6 is in a net-shaped hollow arrangement, one end of the reset spring 7 is arranged at the outer side wall of the vibrating plate 6, the other end is located 5 lateral walls of stand in reset spring 7, 6 upper portions of vibration board are located to protection body 8, vibrating motor 9 is located inside protection body 8, connecting pipe 10 one end is connected with the netted fretwork position in the middle of diaphragm 4, connecting pipe 10 intermediate position is located to first solenoid valve 11.
Wherein, the stirring medicine distributing component 3 comprises a propelling stirring box 12, a clapboard 13, a driving motor 14, a rotating shaft 15, a rotating paddle 16, a scraping plate 17, a normal temperature box 18, a heating box 19, a conveying pipe 20, a second electromagnetic valve 21, a third electromagnetic valve 22, a heat conductor 24 and a heating plate 23, the propelling stirring box 12 is arranged at the middle position of the inner side wall of the box body 1, the propelling stirring box 12 is communicated with the other end of the connecting pipe 10, the propelling stirring box 12 is arranged in a barrel shape, the clapboard 13 is arranged between the inner side walls of the propelling stirring box 12, the driving motor 14 is arranged on the clapboard 13, one end of the rotating shaft 15 is arranged at the output end of the driving motor 14, the other end of the rotating shaft 15 penetrates through the clapboard 13 and is arranged inside the propelling stirring box 12, the rotating paddle 16 is arranged on the rotating shaft 15, the scraping plate 17 is arranged on the rotating shaft 15, the normal temperature box 18 is arranged at the inner bottom wall of the box body 1, the heating box 19 is arranged on the inner bottom wall of the box body 1, the normal temperature box 18 and the heating box 19 are arranged oppositely, one end of the conveying pipe 20 penetrates through the propulsion stirring box 12 and is arranged inside the propulsion stirring box 12, the middle position of the conveying pipe 20 is provided with a tee joint, the other two ends of the conveying pipe 20 are respectively communicated with the normal temperature box 18 and the heating box 19, the second electromagnetic valve 21 is arranged at the middle position of the conveying pipe 20, the third electromagnetic valve 22 is arranged at the middle position of the conveying pipe 20, the heat conductor 24 is arranged on the inner bottom wall of the heating box 19, the heating sheet 23 is arranged inside the heat conductor 24, the propulsion stirring box 12 can be separated by the partition plate 13, so that the driving motor 14 can be protected, the driving motor 14 and the rotating shaft 15 can drive the rotating paddle 16 to propel and stir the liquid dressing simultaneously, the scraper 17 can scrape the residual medicine on the side wall of the propulsion stirring box 12, and the conveying pipe 20 can convey the medicine into the normal temperature box 18 or the heating box 19 as required, the heating sheet 23 and the heat conductor 24 can heat the medicine in the heating box 19, the top of the box body 1 is provided with a feeding port 25 for conveniently inputting the liquid dressing to be mixed, the bottom of the box body 1 is provided with supporting legs 26, the supporting legs 26 are arranged in pairwise symmetry for conveniently supporting the whole device, the upper part of the box body 1 is provided with a vibration switch 27, the upper part of the box body 1 is provided with a control switch 28, the upper part of the box body 1 is provided with a driving switch 29, the upper part of the box body 1 is provided with a shunt switch 30, the upper part of the box body 1 is provided with a medicine distributing switch 31, the upper part of the box body 1 is provided with a heating switch 33, the vibration switch 27 is electrically connected with the vibration motor 9, the control switch 28 is electrically connected with the first electromagnetic valve 11, the driving switch 29 is electrically connected with the driving motor 14, the shunt switch 30 is electrically connected with the second electromagnetic valve 21, and the medicine distributing switch 31 is electrically connected with the third electromagnetic valve 22, the heating switch 33 is electrically connected with the heating sheet 23, and further, a protective layer 32 is arranged outside the return spring 7 to prevent the return spring 7 from influencing the liquid dressing.
When the device is used specifically, liquid dressing is poured into the box body 1 from the material inlet 25, the vibration switch 27 is pressed to enable the vibration motor 9 to vibrate, the vibration motor 9 drives the vibration plate 6 to vibrate, the vibration plate 6 applies pressure to the return spring 7 to enable the return spring 7 to deform, the vibration plate 6 slides up and down on the upright post 5 to further carry out vibration mixing treatment on the medicine, the control switch 28 is pressed to enable the medicine to enter the propelling stirring box 12 through the connecting pipe 10, the driving switch 29 is pressed to enable the driving motor 14 to drive the rotating shaft 15, the rotating shaft 15 drives the rotating paddle 16 to rotate, the liquid dressing in the propelling stirring box 12 can be further stirred in the propelling treatment, meanwhile, the scraper 17 can scrape the residual medicine on the inner side wall of the propelling stirring box 12, the liquid dressing flows into the conveying pipe 20, the shunt switch 30 or the medicine separating pipe is pressed as required, when the shunt switch 30 is pressed, the liquid dressing flows into the constant temperature chamber 18 through the delivery tube 20, when the medicine dispensing switch 31 is pressed, the liquid dressing enters the heating chamber 19 through the delivery tube 20, the heating switch 33 is pressed, and the heat generated by the heating sheet 23 heats the medicine through the heat conductor 24.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (6)

1. The utility model provides a medical dressing agitating unit which characterized in that: the stirring medicine distribution assembly comprises a transverse plate, a stand column, a vibrating plate, a reset spring, a protective body, a vibrating motor, a connecting pipe and a first electromagnetic valve, wherein the transverse plate is arranged between the inner side walls of the box body, the middle position of the transverse plate is in a net-shaped hollowed arrangement, the transverse plate is in an inclined arrangement, the stand column is arranged between the transverse plate and the inner top wall of the box body, the stand column is in a relative arrangement, the vibrating plate penetrates through the stand column and is slidably arranged at the middle position of the stand column, the middle position of the vibrating plate is in a net-shaped hollowed arrangement, one end of the reset spring is arranged on the outer side wall of the vibrating plate, the other end of the reset spring is arranged on the outer side wall of the stand column, the protective body is arranged on the upper part of the vibrating plate, and the vibrating motor is arranged in the protective body, one end of the connecting pipe is connected with the middle mesh-shaped hollow position of the transverse plate, and the first electromagnetic valve is arranged in the middle of the connecting pipe.
2. The medical dressing agitating device of claim 1, wherein: the stirring and medicine distributing assembly comprises a propelling stirring box, a partition plate, a driving motor, a rotating shaft, a rotating paddle, a scraping plate, a normal temperature box, a heating box, a conveying pipe, a second electromagnetic valve, a third electromagnetic valve, a heat conductor and a heating sheet, wherein the propelling stirring box is arranged in the middle of the inner side wall of the box body and is communicated with the other end of the connecting pipe, the propelling stirring box is arranged in a barrel shape, the partition plate is arranged between the inner side walls of the propelling stirring box, the driving motor is arranged on the partition plate, one end of the rotating shaft is arranged at the output end of the driving motor, the other end of the rotating shaft penetrates through the partition plate and is arranged in the propelling stirring box, the rotating paddle is arranged on the rotating shaft, the scraping plate is arranged on the rotating shaft, the normal temperature box is arranged at the inner bottom wall of the box, the heating box is arranged at the inner bottom wall of the box, the normal temperature box and the heating box are oppositely arranged, one end of the conveying pipe penetrates through the propelling stirring box and is arranged in the propelling stirring box, the conveyer pipe intermediate position is equipped with the tee bend, the other both ends of conveyer pipe are linked together with the heating cabinet in normal atmospheric temperature case respectively, the conveyer pipe intermediate position is located to the second solenoid valve, conveyer pipe intermediate position is located to the third solenoid valve, the diapire in the heating cabinet is located to the heat conductor, the heating plate is located inside the heat conductor.
3. The medical dressing agitating device of claim 1, wherein: and a feeding port is formed in the top of the box body.
4. The medical dressing agitating device of claim 1, wherein: the bottom of the box body is provided with supporting legs, and the supporting legs are arranged in a pairwise symmetry mode.
5. The medical dressing agitating device of claim 1, wherein: the utility model discloses a medicine dispensing box, including box upper portion, vibration switch, control switch, drive switch and driving motor electricity, box upper portion is equipped with vibration switch, box upper portion is equipped with the branch medicine switch, box upper portion is equipped with heating switch, vibration switch is connected with the vibrating motor electricity, control switch is connected with first solenoid valve electricity, drive switch is connected with the driving motor electricity, branch medicine switch is connected with the second solenoid valve electricity, divide the medicine switch to be connected with the third solenoid valve electricity, heating switch is connected with the heating plate electricity.
6. The medical dressing agitating device of claim 1, wherein: and a protective layer is arranged on the outer side of the return spring.
CN202121830909.1U 2021-08-06 2021-08-06 Medical dressing agitating unit Active CN215996475U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121830909.1U CN215996475U (en) 2021-08-06 2021-08-06 Medical dressing agitating unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121830909.1U CN215996475U (en) 2021-08-06 2021-08-06 Medical dressing agitating unit

Publications (1)

Publication Number Publication Date
CN215996475U true CN215996475U (en) 2022-03-11

Family

ID=80527049

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121830909.1U Active CN215996475U (en) 2021-08-06 2021-08-06 Medical dressing agitating unit

Country Status (1)

Country Link
CN (1) CN215996475U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114602409A (en) * 2022-03-23 2022-06-10 金盟科技(深圳)有限公司 Preparation method of compound for anodic oxidation normal-temperature rapid oxidant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114602409A (en) * 2022-03-23 2022-06-10 金盟科技(深圳)有限公司 Preparation method of compound for anodic oxidation normal-temperature rapid oxidant
CN114602409B (en) * 2022-03-23 2023-09-26 金盟科技(深圳)有限公司 Preparation method of compound for anodic oxidation normal-temperature rapid oxidant

Similar Documents

Publication Publication Date Title
CN208526929U (en) A kind of Chinese medicine crushing and stirring integrated machine
CN206285732U (en) A kind of dosages distribution dilution device
CN215996475U (en) Medical dressing agitating unit
CN206404664U (en) A kind of pharmaceutical preparation production rabbling mechanism
CN209475162U (en) Plaster boils equipment automatically
CN209211156U (en) A kind of environment-friendly paper pulp processing unit
CN209033184U (en) Medical high efficiency decocting device in one kind
CN207837791U (en) Ophthalmic nursing belt cleaning device
CN215782877U (en) A agitating unit for medicament production
CN208727197U (en) Feed veterinary additive ingredient dispenses storage tank
CN211896427U (en) Sedimentation tank charge device
CN208975640U (en) A kind of liquid medicine dosing tank
CN213822986U (en) Breathe clinical atomizing of internal medicine and spout medicine device
CN211329911U (en) Movable solid-liquid mixing and spraying device
CN207169102U (en) A kind of highly effective and safe performance Chinese herbal medicine effective ingredientses extractor
CN112812955A (en) Constant-temperature fermentation equipment for traditional Chinese medicine decoction pieces and working method thereof
CN215537394U (en) Medical atomization drug delivery device
CN212954631U (en) Quick reaction device for water treatment
CN214915142U (en) Emulsification pot is used in cosmetics production
CN219517152U (en) Traditional chinese medical science internal medicine is with equipment of decocting medicinal herbs
CN215311508U (en) A mix device of dissolving for pharmacy is experimental
CN209438449U (en) A kind of fire retardant conveying device of EPS fire-retardant master granule
CN208599645U (en) Enrichment facility is used in a kind of production of fish oil soft capsule
CN108687108A (en) A kind of kitchen refuse processing apparatus
CN218589512U (en) Breathe clinical medicine sprayer of using of internal medicine

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20240123

Address after: Block D, Biopharmaceutical Park, No. 88 Kechuang 6th Street, Daxing District Economic and Technological Development Zone, Beijing, 101111

Patentee after: BEIJING CAPITALBIO MEDLAB Co.,Ltd.

Country or region after: China

Address before: 110000 No. 400-5, Zhizhi 2nd Street, Shenyang area, China (Liaoning) pilot Free Trade Zone, Shenyang, Liaoning Province (2-401)

Patentee before: Shenyang boo Medical Laboratory Ltd.

Country or region before: China

TR01 Transfer of patent right